Modules that allow users to moderate abusive content.
Abuse
* originally for 5.x
* 6.x in dev
* flag nodes, comments (not sure about users)
Flag content
* originally for 5.x
* 6.x in dev
* flag nodes, comments and users
Flag Abuse (new module)
* originally for 6.x
* no 5.x
* flag nodes, comments and users
* relies on Flag and Views