The Dummies spend a lot of time killing off their own and then feasting on the carcass of the recently deceased.
In their H&M forum, there is a recent thread about self deletions, with links to three, and the vultures are swarming all over it.
In that thread, a post is made about a fresh kill (tombstone), which resulted in a mini-swarm.
The new DU3 included a self-delete feature, but if it is used, eyebrows are raised and fingers are pointed. There are trends, arcs, and scripts suggesting (if one puts together some dots) that many of them don't really like the rest, that conversation is allowed only if everyone involved in that conversation has exactly the same point of view. Disagreement, even mild, is not tolerated for very long.
None of the above came from this site
http://www.electstevedawes.com/ but there is a wealth of information to be found there.