I guess I agree with the idea of radical trust. To quote this idea by Darlene Fichter on her Blog on the Side: "Radical trust is about trusting the community. We know that abuse can happen, but we trust (radically) that the community and participation will work.
In the real world, we know that vandalism happens but we still put art and sculpture up in our parks. As an online community we come up with safeguards or mechanisms that help keep open contribution and participation working."
I have found Wikipedia useful on more than one occasion. In fact, I use it often. I know that all of the information may not be 100% reliable, but I expect that more of it can be trusted than can't.