gif. i've seen a lot of animated gif's in peoples signatures. Where do they come from? is it senior gif? or something like that?

All depends, there's lots of sites that offer free animated gifs and such, they either get them from there or they look them up on Photobucket and other places.

I hope that's what you're referring to lol

there's also tumblr where i find a lot of my gifs, or people could be making them themselves in photoshop (it's fairly easy)

& thanks:)