I had thought my lesbian-ness had already been established here?
I actually know more straight girls who like reading yuri manga than lesbians... I don't think this is actually representative of the larger numbers, because most of my friends who are anime or manga fans are not gay. The gay folks I do know... they aren't into manga to begin with, so they don't read yuri.
I'm going to the yaoi con mostly to hang out with friends and for an excuse to wear a lolita dress without people giving me WTF looks.
Also, meet some new people. Since a yaoi con is going to be filled mostly with girls--whether they're moderate yaoi fans, fujoshis or lesbians who prefer yaoi, it ought to be interesting.