Well, of my son's (male) 6, 7 and 8 year old friends, only one of them likes Foster's. He's the one who, when he's at his mom's house, pretty much just sits in front of the tv watching Cartoon Network all the time, so he loves *everything* on Cartoon Network. The objection to Foster's is that it's "boring." I think what they like right now is easy-access stuff. The way it seems to me, Ed, Edd & Eddy they like because the stories are very simple and the humor is very blatant and Three Stooges-ish. They like Teen Titans because, while the stories and characters can be fairly complex, it's very fast-paced with a lot of kicko-fighto, and also the stylized animation is very good at spelling out what's going on (the characters are very expressive in both realistic as well as hyper-anime ways). From what I've seen of Foster's, it's a little less fast-paced, and the humor and action is more subtle.

But, that's just the kids I know. I'm not sure how the larger viewing population feels. :P

Oh no, he wants to be called Eddy?? Eek! :)) Too funny.