We all know AdBlock Plus can block ads—it's right in the name, but it can do oh so much more. It can clean up Facebook's messy interface, block YouTube comments and other junk, stop web sites from tracking you, and even protect you from malware. So even if you don't block ads (and if you do, we highly recommend you whitelist your favorite sites!), an Adblock extension is pretty handy to have around.
Chances are you use Google Maps quite a bit for driving directions and navigation, but if you drill down into some of its seemingly "gimmicky" features, you can find some cool stuff. Street view alone can do some really cool stuff: you can use it to scout neighborhoods when you're house hunting, check for parking before you go to a new restaurant, and even reverse look up places you don't have an address for. Google Maps is also great for remembering where you parked your car, seeing where all your friends live at once, and more.
Just because you're a Chrome user doesn't mean Firefox doesn't have the occasional use (or Opera, or whatever it is you don't use). Opera, for example, makes a great secondary browser optimized just for slow connections (like when you're tethering or on crappy public Wi-Fi). A secondary browser is also good for logging into multiple accounts on the same site, or any of those other things private browsing mode is good for. Heck, you could even use one for work and one for play, to ensure you aren't distracted during work hours.
If you're still resisting Twitter because you don't care what Miley Cyrus had for breakfast, fear not: it's useful for more than being a 140 character fortune cookie machine. We've shared a ton of great uses before: it gives great timely search results, for news, makes an awesome customer service portal, and can even make your favorite apps work with your phone's voice commands. It also proved to be quite helpful during Hurricane Sandy, when other services went down.
Ah, Facebook—the web service we all love to hate. Contrary to popular belief, though, it isn't just a horrible time suck—it actually has some worthwhile uses, too. For example, it's video chat is pretty phenomenal, and it's a great way to schedule a party, collect photos taken of you (something that was much more difficult before Facebook's invention), and follow your favorite web sites (hint, hint). Seriously though, with the right attitude, it can be a worthwhile addition to your bookmarks bar—graph search alone has some pretty neat features.
If you aren't familiar with text expansion, it's amazing: with just a few keystrokes, you can type long strings of text in just seconds. It's great for typing out addresses, bits of code, canned email responses, and more—but it can do a lot of other stuff, too. You can use it to navigate the folders on your computer, use them to type non-English characters, save yourself from awkward word choice mishaps, and even avoid spam on Twitter. Check out our list of the best clever uses for more, and if you haven't gotten started with text expansion yet.