Foursquare - Shows a “thank you” message on your join-date anniversary.
/via Gaurav Sharma
Foursquare - A small plea for help shows when you pull down too far to refresh.
Foursquare iOS app - if you drag your uploaded photo to the left, you see a hidden mascot holding a camera.
Foursquare - The map in the landing page is the map of your actual position
Foursquare - Allows you to import your bio from Twitter
/via Mel Hambarsoomian
Foursquare - In the iOS notification settings, the option to include adorable puppy photos in weekly updates is given.
Foursquare - Every time you go to the explore tab in the foursquare app, it gives you different examples of what you can search for.