I am 15 , and i use it mainly for IM and surfing , and another main function is taking a load of random drunken party photos and uploading them to facebook at a later date , this causes alot of embaresment to my friends
Also use it for my videos and music on the go , love the way you don't have to convert AVI's to Mp4 like i had to do with my iPod touch + the screen is way better