Robert Scoble started a good discussion in the last few days with both economy-business model points and technical-cooperation-definition points. Look at this, or this to catch up on it.
I think there are three things here:
- what would you pay to keep reading and using (advertising-earning, self-sustaining blogs)
- what you share for the value of sharing and getting back ideas
- "look-at-me-mom" blogs, successor to the tombstone web sites of 1997 or so