> You could still consume multimedia and interactive material, of course, but only under terms you set, not terms the various site owners set. Perhaps you would want no ads, or no hyperlinks, or a time limit each day that would be acceptable for you to play games.

What incentive do people have to create content with such a system? Altruism is fine, but content creators need to pay rent.

I worked on something a little while ago that was similar - allowing people to mash arbitrary content together - but abandoned it because of the hassle of trying to prevent it being used for leeching.