Find out more and how it works after the jump.
Instagram is simple to use; download it to your iPhone from the iTunes Store and sign up with some basic information. Then, the app searches your contacts (including Facebook and Twitter, if you allow it) for friends to follow. Once you're in the app, your friends' photos appear in a stream, where you're able to comment on others' photos or add one of your own. A bonus: you're able to apply over a dozen different filters to any photo snapped using Instagram before sharing. Location data can be added to photos, photos can be shared using Twitter, Tumblr, Flickr, and Facebook, and you're able to check into Foursquare when you post a photo with a location.
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