For EoEO. Make it possible for people to post threads anonymously. For example, let's say someone has AIDS and they need to talk about it, but they're not up for admitting who they are.
Or any other STD.
Or any other embarassing situation.
Or anything else.
I do realize an anonymizing feature can and would be abused, but we'll just have to keep an eye out and be a little more warn happy.