Just an observation but... I wonder if the current restrictions of editing the JikesRVM wiki is perhaps too restrictive and discouraging possible contributions of useful nuggets of information by non core members? Whilst I understand possible concerns about spam and the quality of contributions has any thought been given to allowing everyone to edit the wiki by default, perhaps only protecting certain key pages such as the front page etc.
A lot of knowledge is only documented in the mail archives, creating a special section on the wiki and encouraging users to contribute back knowledge might be a nice way to help build the JikesRVM community.
Anyway just a thought