Here's a good example, and Morg will remember this.

We have exposed a lot of nasty things Vinnie was doing to Gnutella here.
Back when the BS forums were being used to cover up things Vinnie was doing, people came here and posted Unregistered about what was happening over there, and after people found out, Vinnie had to change his policies and open his forum and quit covering up what he did.
If we didn't do that, Vinnie would have kept on doing what he was doing and maybe worse, but since there were uncontrolled posts here, Vinnie couldn't cover it up.
We need a way to report bad things that are happening to Gnutella, and most likely a Unregistered poster will report it.
If this forum is totally controlled and closed, then when some "dictator" comes along, there will be no way to stop them and people will feel frustrated that they can't do something about it and throw up their hands and give up (or risk being cut off).