You get pointz every time you rate a photo or comment or accept a friend request, it gets you to the next level on here, like you start out as fresh meat, then move to new fu, and so on.
oh, lol, i can understand that, you probably feel like you're on crack right now with all the comments and fans and ppl greeting you because you're new. but it will slow down in a few days and you'll get the hang of it :)