It's called Instagram.  The picture here is of a fire we had this past weekend taken with Instagram.  I've been using the app for about a year now and everyday more and more people download it.  You should download it today.  It's free!Instagram is like a photo sharing social network.  If that makes any sense.  You make an account, start taking pictures and follow other people's pictures.  You can also edit the photos in Instagram with cool effects.  Check it out and follow me - Georgiajen!