Where do all the Smilies come from?

Every day a few more of these smilies arrive in my inbox. They're not really smilies any more, they are animations on almost every subject you can think of. I often wonder where they all come from. Someone must be out there somewhere thinking to themselves .... I must make an animated gif of a bloke catching a fly with his tongue. today!

Anyway I'm glad they do. I delete most of them and the rest I pop on Friday Fun, like the ones that made it there this weekend. Hope you enjoy them (lots of new videos too by the way!)