A long blog post explains why the author, a feminist, is not comfortable with the rationalist community despite thinking it is "super cool and interesting". It's directed specifically at Yvain, but it's probably general enough to be of some interest here.
http://apophemi.wordpress.com/2014/01/04/why-im-not-on-the-rationalist-masterlist/
I'm not sure if I can summarize this fairly but the main thrust seems to be that we are overly willing to entertain offensive/taboo/hurtful ideas and this drives off many types of people. Here's a quote:
In other words, prizing discourse without limitations (I tried to find a convenient analogy for said limitations and failed. Fenders? Safety belts?) will result in an environment in which people are more comfortable speaking the more social privilege they hold.
The author perceives a link between LW type open discourse and danger to minority groups. I'm not sure whether that's true or not. Take race. Many LWers are willing to entertain ideas about the existence and possible importance of average group differences in psychological traits. So, maybe LWers are racists. But they're racists who continually obsess over optimizing their philanthropic contributions to African charities. So, maybe not racists in a dangerous way?
An overly rosy view, perhaps, and I don't want to deny the reality of the blogger's experience. Clearly, the person is intelligent and attracted to some aspects of LW discourse while turned off by other aspects.
Maybe invite blacks or other members of marginalized communities explicitly ?
Some time ago, Eliezer wrote a post, which made it clear he would be glad to see more women on LW. I thing his article was well written. Did any of You guys, the opponents of crazier versions of feminism, feel annoyed by that ? Later, there were other efforts to drag women here. (It does feel flattering, I tell You). Now, the percentage of LW women has grown slightly (lazy to look up the census result), athough we are still a minority.
I don't think simple invitations are going to make much difference.
If some marginal group didn't drift here spontaneously because they're inherently interested in the community, then we must provide them other incentives. Unfortunately this might mean privileging them some way, which to be honest I usually find so unjust and contrary to truth seeking it pisses me off.
Perhaps there are benign forms of such privileging, but none are cognitively available to me at the moment.