When you have loyal community members, they frequently take a big part in managing the community by policing other members, transmitting the culture, and helping with other management tasks. A community manager for Second Life who manages the Orange community, and they gave some community members management responsibilities within the community and so far has been running very smoothly. They also have 3 full-time managers, but this small community within the larger community to help to police the community.
One person here manages African American and Latino communities, which tends to bring in some people who constantly invoke the free speech card when they are being obnoxious asses. In his case, the community has a social contract and a core community where people help enforce it. In general, censorship is OK to maintain the health of the community.
Talked more about community management instead of ethnography.