Maybe Andy Warhol was right. Apply his factory model to today's web 2.0 and you've got something pretty interesting. That's what this site is all about, think of it as a giant sandbox that all the artists can play in.
I don't really like Andy Warhol, however, the collaborative aspects I think are the fundamentals of art. I look at it this way; steal, borrow, remix my art and it does not matter it will always be mine. I get angered when someone else makes money off of my work and here I am broke..I think this is where those lines are crossed and we as artist get bitter. However, this site is great and I want to know everyone, speak with everyone and do some awesome collaborations..Maybe we could have some great art battles or send collaborative drawings through the mail where everyone can have a section and mail it off to each other and finally post it here on the website.
I think it's a wonderful idea. I remember when I first got into computers ('96-'97). I hung out on Usenet in the alt.surrealism newsgroup and there were about 6 or 7 artists that I used to pass images back and forth with doing essentially what the mashup group is doing here. Great fun to have a place dedicated to that. As far as theft or whatever, as long as someone is giving me credit (at least) for use, then I don't really have a problem. I think there's a line though. Usually it gets crossed when there's money involved. I think it depends on the amount of work that is mine vs. theirs also.