"Count me as an advocate of media sites allowing public comments to be
added to content -- and I mean all content, including ads...An example of what's possible comes from the Muncie Free Press, a citizen-journalism website covering Muncie, Indiana..."
I can only imagine how much more useful advertising would get if something like "hot deals in my local area that people like me rated with 5 stars", for example, was filtered through a good recommendation engine.
-kpaul