I do... I have 34 clips up on Shutterstock right now. I have way more to upload, just too busy working on something else right now to get to it. I've sold one clip at SS, one of a whitetail deer with his 10-point rack (not a fractal render or an After-Effects animation which seem to be very popular).
My portfolio:
http://footage.shutterstock.com/vide...itter_id=11754
Todd... you're such an awesome vector artist ... you might could make a lot doing vector animations... go through SS's footage site and check out the Abstract/Backgrounds category and get some ideas... they're paying about $30 per sale (more if you can render them out high definition but i don't know how you'd do that).
Thanks for the link on IStock, I didn't see that, even though I'm on there every day... duh... distracted I guess.