soc.support.youth.gay-lesbian-bi - join
Gay youths helping each other. (Moderated)
Low activity, 225 subscribers, Usenet

soc.motss - join
Issues pertaining to homosexuality.
Low activity, 701 subscribers, Usenet

bit.listserv.gaynet - join
GayNet Discussion List (Moderated)
Low activity, 298 subscribers, Usenet

alt.politics.homosexuality - join
As the name implies.
Low activity, 1177 subscribers, Usenet

soc.bi - join
Discussions of bisexuality.
Low activity, 473 subscribers, Usenet

soc.men - join
Issues related to men, their problems & relationships.
Low activity, 2472 subscribers, Usenet

boys in wet clothes - join
a group about boys getting wet with their clothes on
Low activity, 2891 members, restricted

gay news - join
Gay news updated daily (maybe even several times a day)
Low activity, 158 members, restricted