(From Konkvistador's not entirely clear description in the parallel thread, it sounds like you've already tried it via a mailing list, but you can probably try harder?)

I guess I should clarify, I organized a mindkiller discussion mailing list with interested thinkers from LessWrong, that was active for some time. Anyone who was invited was also invited to propose new members, we tried to get a mix of people with differing ideological sympathies who liked discussing mind killing issues and where good rationalists. The vast majority of people contacted responded, the end result was about 30 LWers. I don't feel comfortable disclosing who opted to join. I think I did send you a PM with an invitation to join.

More information here.

The reason I thought such a mailing list might be a good idea was partially because I've had very interesting email correspondences with several LWers in the past (this includes Vladimir_M).