1. Prove you're not a serial killer for Airbnb rentals swirlmedia.co You can still rent places on Airbnb without a Facebook account, but having one makes it much easier, since it allows hosts to rent to mutual friends or scope profiles before opening their home to a stranger. 2. See what music your friends are listening to dvice.com As of September, Spotify is no longer a Facebook-only service, but it might as well be — the e-mail option is buried below LOGIN WITH FACEBOOK. It also provides a real-time feed of everything your friends are listening to on Spotify. 3. Have a simple alibi if you're accused of a crime static3.businessinsider.com "Wherer [sic] my IHOP" kept a Brooklyn, NY, teenager from being charged with robbery, since the Facebook status update provided a solid alibi: a time and a location. 4. Get a job at Facebook tumblr.com You can't work at Facebook without a Facebook account. Go figure. 5. Get a job at a public agency media.npr.org Earlier this year reports surfaced of public agencies requiring applicants to submit their Facebook log-in and password. If you don't have one at all, it could raise a few eyebrows. 6. See what videos your friends are watching zdnet.com A VEVO redesign in May urged users to login with Facebook for personalized video playlists. 7. Crowdsource locating missing pets with zero effort buddymedia.com A Facebook ad for Zion helped track down the missing cat within 30 minutes of putting it up. 8. See exactly where your friends who have Facebook are Let's be honest, no one uses Apple's Find My Friends. But Locate does the same thing — for Facebook users, of course. 9. Comment on your favorite website TechCrunch is just one of many sites that have moved exclusively to Facebook comments in an attempt to silence the trolls. (Some trolls have proven fairly resistant to the harsh light of Facebook de-anonymizing, though.) 10. Share life's biggest moments Via facebookstories.com Because it's not a BIG moment if it's not on Facebook. 11. Stay truly connected with your grandparents blogs.sfweekly.com Facebook is where grandparents and grandchildren are connecting like never before, says The Wall Street Journal. 12. Publicly prove you are smarter than your friends iphone.appstorm.net / Via mashable.com Games like Scramble and Words with Friends don't require you to log in with Facebook but they HIGHLY encourage it. (Plus, when you beat your friends, you can't post it Facebook, so it basically doesn't count.) 13. Poke someone in an acceptable manner c257.r57.cf3.rackcdn.com 14. Talk to people against their will flickr.com 15. Find friends who will give you their organs Via kikiandtea.com Facebook has made it way, way easier to see who will give you their kidneys. 16. Discover the secret of eternal beauty bluefountainmedia.com 17. Revisit old digital memories instantly syntax30.com You can't go back and revisit digital memories with apps like Timehop without a Facebook account. 18. Easily converse in pirate Via Facebook: changetopirate 19. Force your religious beliefs on others s3-ak.buzzfed.com 20. Learn helpful new dating tips Via huffingtonpost.com Facebook Dating: 3 Ways To Get A Date With Your Crush Through Social Networking 21. Change the world Via causes.com 22. Have an @facebook.com address and an open invitation to spam getelastic.com 23. See who voted with your same name!!!! Via barackobama.com This is a really important thing you can't do without Facebook. 24. Get your lost wallet returned blogcdn.com Because how else can people be expected to find you? 25. Find some cute babies to adopt a.abcnews.com Instead of going through a traditional adoption agencies, more families are using Facebook to adopt children. Woo-hoo! 26. Say good-bye, digitally admin.killerstartups.com "Current means to share notice of someone’s dying or add comments can make an awkward event even more uncomfortable." Good thing there's RIP App. 27. Win free swag Via facebook.com Obviously Facebook is not the only place to win free stuff, but without it, it's harder to know when Safeway is practically throwing free turkeys your way.