Don’t email huge photo files to your friends and family.
Do post pics to a photo sharing website, where you can control who sees them and whether they can print their own copies. Then just email the link.
Do use descriptive subject lines when posting on Google Groups.
Don’t post your message more than once. If you post to multiple groups, then don’t send each message separately; it’ll only confuse your readers.
Do use programs like HootSuite or TweetDeck to manage your social networks.
Don’t have people send you important messages on Facebook -- unless you log in multiple times daily.
Do look for “https” in the address bar of an online retailer or for a padlock symbol in the lower right-hand corner. This means the site is a verified online business.
Don’t shop online via a public computer. Entering your credit card information on a computer housed in a public space makes it more vulnerable to hackers.
Do back up your smartphone online (e.g., with iTunes for iPhone backup) so you can easily transport your apps and contacts to a new phone.
Don’t save your data to your phone’s internal storage -- you can lose it all if your phone dies or have to re-enter it manually to upgrade to a new phone.
Do use numbers to convey your strengths and abilities when sending a resume to an online job site. “I wrote 15 stories every day."
Don’t make up those numbers
Do use an online file-storage service like Google Docs to save documents you need to access frequently.
Don’t rely on emailing yourself files back and forth -- you’ll forget at the time you need your files the most.
Do use a URL-shortening service, such as bit.ly, to save space and track when people click on your links.
Don’t post long, complicated URLs that make your online posts hard to read.
Do monitor your social networking accounts so spammers don’t take them over to send bogus messages or pleas for money to your friends.
Don't accept random friend requests on Facebook. If you do, these strangers will be able to use your personal profile data.
Do set strong passwords by using numbers to spell words (e.g., “str8” for “straight”).
Don't use personally identifiable info like your pet's name as your password, no matter how clever it might be.
Do use Hulu to stay current on your favorite TV shows.
Don’t keep paying for satellite or cable when you can watch TV online for free.
Do check your privacy settings on Facebook to see who can view your profile.
Don’t fall for the rumor floating around Facebook status updates that you can safely download an app to see who viewed your profile.
Do stop the minute you see a fake alert, shut down your browser and perform a full scan with the legitimate antivirus product.
Don’t fall for a random pop-up window that claims your computer is infected with a virus.
Do make sure the payment site begins with “https:” to stay secure when buying online.
Don’t buy from sites that don’t provide an actual address and telephone number.
Do send a note via email if you aren’t close enough to the person to call them.
Don’t use Twitter or Facebook to offer your condolences if the person hasn’t posted about their loss.
Do use the bcc function when emailing a long list of people to protect your list’s privacy.
Don’t skip the subject line, but do keep it brief.
Do buy an iPhone in the fall or winter. Apple usually releases a new version in June or October.
Don’t buy it in the summer. It’ll probably be an older model, and you’ll pay the same price that you would if you were to just wait for the new version.
Do lock your screen (Ctrl+Alt+Del) to protect your info whenever you leave your PC on but unattended.
Do include only essential info in your emails.
Don’t send one-word emails -- they only fill up inboxes and serve no real purpose. Gauge the situation, and if a follow-up isn’t required, don’t send one.
Do protect your online images from being stolen by adding a free watermark to each.
Don’t post any photos online that you don’t want people to copy under any circumstances.
Don’t buy a deal off Groupon just because it seems like a bargain. Ask yourself whether you’d really pay for this service without the discount.
Do sell your unused deals on DealsGoRound.com, which allows you to unload unused or unwanted Groupons.
Don’t expect privacy when using your employer’s computer or mobile device. More than 75 percent of companies monitor the websites their employees view, and 50 percent archive employees’ emails.
Do document (off your computer) pertinent information, like the date you bought your PC, its serial number, and manufacturer and ISP phone support numbers.
Don’t upgrade Windows as a way to update an old PC. Instead, buy a new PC (they’re really cheap these days) with the latest version of Windows installed.
Do respond to emails within 48 hours if you are running an online business or selling used goods. Otherwise, you’ll lose sales.
Don’t have a subpar search function on your website if you are selling products. Be sure your search feature can find SKUs, model numbers and even misspelled items.
Do look at several real estate listing sites when searching for a new home online. You may find hidden gems on one site that aren’t featured on another.
Don’t waste time looking at homes out of your price range -- you’ll be able to get prequalified more easily if you are realistic about what you can afford.
Do make money off your blog by featuring relevant ads on it.
Don’t run flashy or blinking ads; they’re annoying and distracting to readers.
Do add useful tips and info to existing locations on foursquare. Sharing your knowledge of cool places is one of the best ways to use location-based social networking.
Don’t accept foursquare friend requests from Facebook friends you don’t know in real life. Do you really want strangers to know where you are at all times?
Don’t buy a wireless adapter if your printer has fax and scan functions. The adapter will only let you print.
Don’t let your apps run continuously, or you’ll drain your battery. Use a free app like Task Killer to close apps you aren’t using.
Do educate yourself on the latest scams on the Internet.
Don't skimp on your firewall. If your operating system came with one, be sure to activate it.
Do ignore a friend request on Facebook rather than defriending a person later. It's kinder.
Don't send your Facebook friends a barrage of game requests. If they want to play a game, they will.
Don't buy from a retailer whose phone number isn't listed on their site. If you are unfamiliar with the company, call the phone number to verify its accuracy.
Do offer special pricing when selling products online, and throw in an extra product or free shipping.
Don't buy a new gaming system the day it's released. You'll save money and get to read user reviews before making the purchase.
Do treat your smartphone like your computer: Make sure the OS and software are up-to-date at all times to decrease your chances of contracting malicious bugs.
Don’t download apps from third-party application repositories, which will increase your chances of being hacked via phone.
Don’t buy a computer until you know exactly what your needs are, not your wants.
Do dedicate one computer in your house to use for file sharing.
Don’t make this the computer you use for online banking or other sensitive business.
Do log off completely on your online banking site, instead of just closing the window.
Don’t have other browsers open when you’re banking online -- a bug or other vulnerability from one browser could interact with the other.
Don’t add a splash page (intro page users have to click to enter) when designing your site. It only annoys users.
Do ensure your site works with and without the “www” prefix, which will increase your traffic.
Do your research online when buying a car -- sites like Edmunds.com can help.
Don’t buy a car over the Internet without seeing it first. Have you heard of online car buying scams?
Don't just post your own ideas on Twitter; make it a place for conversation and sharing.
Do have a healthy ratio of original tweets to @ replies. You’ll build relationships and broaden your network.
Don't dial numbers on your iPhone while you're driving.
Don't set up your email accounts as POP when you add them to your mobile devices.
Don't drain your iPhone's battery by leaving your apps open. (Apps stay open in the background until you force them to close.)
Do double-click your home button to see all your running apps, then hold your finger on an icon and touch the minus sign to close an app. Your device's battery will last longer.
Don't leave people to wonder why you're not responding to online messages when you're on vacation.
Don't forward other people's emails without thinking.
Do check your privacy settings on photosharing sites to be sure your photos and information are protected.
Don’t post pictures or videos of your kids with their friends unless their parents have given you permission to do so.
Do double-check the Web address you’re on before shopping online.
Don’t shop on sites with domain extensions like .ru, .cc, or .con.
Don’t put your email address on your website, inviting people to contact you.
Do use a contact form with which users can ask you questions and address concerns.
Don’t have 10 pages of icons on your iPhone.
Do create app folders by holding your finger on an app icon until they all wiggle, then dragging one icon on top of another to put multiple in a shared folder.
Don’t upload a bunch of files to Google Docs one by one using the usual multistep upload process.
Do upload files by dragging and dropping them from your computer to the Google Docs homepage.
Don't use all 140 characters if you’re hoping your tweets will be retweeted.
Do leave at least 20 characters unused so others will have room to type “RT” plus your username and a comment.
Don’t print out a boarding pass for your next flight unless you have to.
Do inquire whether your airline can let you check in and board your flight by scanning a code on your mobile phone screen.
Don’t come up short the next time you need a really cool, unique gift.
Do use great cloud photo services, such as Snapfish, to create your own totally customized photo books.
Don’t stress about whether or not your cell phone is actually causing cancer -- yet.
Don't forget to have your kid do a little homework this summer using resources found on the cloud (search: “summer learning”) so next year isn't such a shock.
Don’t post more than 10 status updates a day on Facebook. (Ten is already a lot.)
Do keep in mind that your Facebook friends like to hear from you, but they don’t want to get that many updates or “likes” or comments from you.
Don’t ignore what your kids are doing on their mobile device.
Do talk to them often to make sure they are not sexting or being cyberbullied.
Don’t forget to set up your outgoing vacation email message when you hit the road this summer.
Do save on your energy bill by unplugging laptops, tablets and other devices you don’t take with you on vacation.
Don’t miss your favorite radio stations when you’re out of town.
Do download an app like TuneIn Radio Pro, which lets you listen to and record more than 40,000 AM and FM radio stations from wherever you are.
Don’t keep clogging your mailbox with hard copies of your favorite magazines.
Don’t kick yourself the next time you forget to set your DVR to record a show.
Do use hashtags on Twitter so that your tweets get more exposure and attract like-minded followers.
Don’t forget to retweet other tweets that you find interesting or helpful.
Do prevent this problem by using the Allowances feature on iTunes to set a fixed monthly spending allowance.
Don't get blindsided by games and apps that prompt kids to make in-game purchases, which drive up the price.
Do enable Safety Mode on YouTube in order to filter out any inappropriate content that may be seen by your young ones.
Don’t forget that Safety Mode functionality is browser-specific, so you’ll need to turn it on in all of the browsers that your family uses.
Don’t get offended when your teens complain for the 100th time (as they watch you type a text): “You are the slowest texter in the world!” or “Don’t press so hard on the screen!”
Don’t “friend” people you don’t know -- and don’t friend strangers because of their profile pictures.
Don’t just assume that your child understands online bullying.
Do have clear discussions about what constitutes online bullying behavior and exactly what your child should do if victimized.
Don’t bother with the hash tag (#) if you’re tweeting a simple term. All tweets are search-indexed, so a search for “cloud” will turn up tweets that contain “#cloud” and “cloud.”
Do tweet meaningful thoughts and observations vs. just passing on countless website links to friends.
Don’t pay to download your favorite HBO shows if you’re a channel subscriber.
Do hide all of your recipients by adding them to the bcc area and putting your own address in the “to” field.
Don't send mass emails that leave your contacts’ email addresses exposed for anyone to see. Spammers are always looking for legitimate email addresses.
Don't risk losing important receipts that you may need for your records.
Do download a free program like NutshellMail, which consolidates all those notifications and delivers them when you tell it to.
Don't worry about someone else hacking into your Facebook account.
Don't snail-mail your resume -- HR is much more likely to look at an electronic copy than a paper one.
Do keep receipts and double-check your bank statements. If you get overcharged, call the retailer immediately and ask them to correct the error.
Don’t forget to set up cookie alerts on your browser, which allow you to choose which sites can store your personal logins.
Do compare the going rates on eBay to make sure you’re getting a fair price for your item.
Do check out charities on the Better Business Bureau website before donating.
Don’t be conned into giving money to charity organizations that aren’t legitimate.
Do check Snopes.com when you get an email that wants you to believe a fishy story.
Don’t fall for email forwards that sound too good or bizarre to be true.
Don’t pay full price for food and activities when you go on vacation.
Don’t fret if you can’t find a local book club you enjoy.
Do join Goodreads, the social network for book lovers, and join a virtual book club.
Don’t leave your Twitter account at risk of hacking.
Don’t write the same text over and over when you want to send it to multiple people.
Do download a free iPhone app like ICE Lite , which stores your personal contact info and your top three emergency contacts for quick reference.
Don’t ever use Skype for emergency calling to 911 -- it won’t work.
Do consolidate all your charging needs with a tiny portable gadget like Powerstick, which works with MP3 players, cell phones and PDAs.
Don’t drain battery life needlessly. Turn off certain connections when not needed (e.g., GPS, Wi-Fi, Bluetooth, etc.).
Do use a browser like Firefox, which enables you to save open tabs and continue browsing where you left off.
Don’t miss out on helpful add-ons like Aging Tabs, which denotes how long tabs have been open and highlights the current tab in use.
Don’t spend your money on the first generation of a fancy new smartphone.
Do wait for the second generation, when the product will have fewer kinks, cooler features and maybe a lower price.
Don’t set up an automated “Thanks for following me” message on Twitter.
Don’t leave your online reputation open to interpretation.
Do change your passwords every 90 days.
Don’t use the same password for social networks that you do for your bank accounts.
Do file your taxes online through a service like Free File, TurboTax or TaxACT.
Don’t use a service that doesn’t make major yearly upgrades.
Don’t think that LinkedIn is just for growing your network.
Do take advantage of the site’s social interaction capabilities, such as Groups.
Do save money by using social coupon sites like Groupon to buy gifts.
Don’t risk harming your credibility by retweeting someone’s link without looking at it first.
Don’t forget that your smartphone can be a tool for healthy eating.
Do check to see whether the restaurant you’re eating at has an app that includes nutritional data so you can eat healthy on the go.
Don’t worry about where your teenager is when he’s out late at night.
Don’t forget that LinkedIn isn’t like Facebook; people can know when you’ve viewed their profiles.
Don’t fall for job scams. If a post looks too good to be true, verify it on PhishBucket.org, which lists thousands of fake offers.
Do use sites like CareerBuilder.com, Monster.com and Indeed.com to look for a job.
Don’t forget that some airlines don’t offer their fares via discount travel sites such as Travelocity.
Do check all the top sites, including airlines’ proprietary sites, to see whether they offer the best deals themselves.
Don’t forget to post the agreement near all shared computers.
Do use a website like EcoSquid.com to help you pinpoint e-recycling locations and donation opportunities.
Don’t waste time playing just any online game. Instead, procrastinate for a cause by playing FreeRice.com, a word game that donates rice to the United Nations’ World Food Programme.
Don’t waste time each day visiting every blog you read.
Do save time by using a feed, such as Google Reader, to read all your favorite blogs from one spot.
Don’t be fooled when traveling: International calling will cost you a fortune.
Don’t unknowingly leave traces of your activity; be sure to clear any cookies and browsing history before leaving.
Do comparison-shop with the Windows Shopper app by Superfish. The app gives you comparative prices on similar items from across the Web.
Don’t try to use the app with Safari, Chrome or Netscape browsers -- it’s only available on Internet Explorer and Firefox.
Do get the new “Worlds of Warcraft” patch if you’re a gamer.
Don’t get the malware-infected patch from RatingBuster.com.
Do get spyware software that updates automatically.
Don’t click on pop-up advertisements, which often contain spyware that can track your passwords or lift your private information without you knowing!
Cloud computing enables you to connect wirelessly and comes with plenty of benefits. What's your favorite feature?