Your first check-in! You earn badges for your adventures, like staying out late or trying 5 different pizza joints. And with every check-in, we learn more about your tastes and can recommend new places. Head over to the Explore tab to see our suggestions!

You've checked into 10 different places! Now, how about inviting some friends into the mix? You can check out new spots together, share recommendations, and earn sweet BFF bonus points!

You've checked into 25 different venues! Got any great recommendations (like the best time to visit or a secret menu item)? Share them with the world! Add Tips to places you love and get suggestions from others.

You've checked in to 50 different places!

You've been at the same place 3x in one week!

That's 30 check-ins in a month for you!

10x trips in 30 days? Go reward yourself with a hot shower, a shot of wheatgrass (or a milkshake!), and some snazzy fitness wear with "built-in technology." P.S. You look nice today!

Forget those "Bender" and "Crunked" badges - you've conquered the playground circuit! Fun! You'll unlock Level 2 once you've been to 5 DIFFERENT playgrounds.

Happy Halloween from foursquare! Here's to hoping you came up with a better costume than The Jersey Shore.

That's over 100 days you've checked in at the same place! You should have your photo hanging on the wall by now. Seriously, if they don't let you, just hang it up yourself.

And we thought last year was huge! Happy 4/4^2 day! Thanks to all of you amazing people, for organizing over 1000 parties around the world for our little startup! We would give a speech, but we're just trying to hold back our tears.

Sharper Image. Gap. That guy selling bedazzled iPhone cases from a kiosk. It’s always nice to see some familiar faces. Now, weave your way through that crazy crowd, grab an Orange Julius, and enjoy the fountain’s soothing gurgles. Congrats, Mall Rat! You’ll unlock Level 2 once you’ve been to 5 DIFFERENT malls.

In 2010, foursquare fans declared April 16 4sqDay (4/4^2 – nerds after our own heart!). Two years and two billion check-ins later, you’re still why we get out of bed each day. Thanks to all 20 million of you for making us part of your lives. Happy 4sqDay!