Most healthy intellectual blogs/forums participate in conversations among larger communities of blogs and forums. Rather than just "preaching to a choir" of readers, such blogs often quote and respond to posts on other blogs. Such responses sometimes support, and sometimes criticize, but either way can contribute to a healthy conversation.
If folks at Less Wrong saw themselves as a part of a larger community of rationalists, they would realize that most rationalist authors and readers are not at Less Wrong. To participate in a healthy conversation among the wider community of rationalists, they would often respond to posts at other sites, and expect other sites to respond often to them. In contrast, an insular group defined by something other than its rationality would be internally focused, rarely participating in such larger conversations.
Today at Overcoming Bias I respond to a post by Eliezer here at Less Wrong. Though I post occasionally here at Less Wrong, I will continue to post primarily at Overcoming Bias. I consider myself part of a larger rationalist community, and will continue to riff off relevant posts here and elsewhere. I hope you will continue to see me as a part of your relevant world.
I worry a little that Less Wrong karma score incentives may encourage an inward focus, since karma is so far only scored for internal site activity.
I would like to see more people who practice rationality and assumption questioning in other disciplices: women's studies, public policy, art and literature. I took a lot of literary philosophy classes back in the day and read quite a few post-modern critiques that mirror what I see on Less Wrong.
Almost every post-modern analysis depends on questioning how someone framed their subject and proceeds to recommend different assumptions; surely people with these backgrounds have examples to offer outside of game theory and psychology.
It would also be good to see some legal types. Lawyers competing in front of Judges who then make decisions that affect people's lives must certainly have put a little thought toward the roles of rationality and persuasion in truth seeking. Even if you don't care for lawyers, you have to wonder how judges proceed.
Maybe we should invade other forums and lead the discussions back here?
EDIT ( In regard to that OB post on female perspectives, its interesting that Robin Hanson of all people wasn't more humble about his potential lack of knowledge in a new field when his post got a poor response! Goes to show how important other perspectives are to this project)