Lawsuits In Training
Two sites that are ticking people off enough to provoke litigation; in both instances, I think the sites probably have the upper hand:
DontDateHimGirl.com, which warns of those with cheating hearts; don't miss its blog.
Gawker's Stalker, mashed up with Google Maps; posts real-time sightings from readers and is angering celebs.
Interesting: both via CNN (from the busy, busy "Web Gone Wild" desk?), and both examples (some might say bastard stepchildren?) of aggregated citizen media.