Dworkin - I don't think you are "propagating" anything by starting a thread here. I am aware that there is a lot of discussion amongst women in the athiest community (on the internet) about the sexism they encounter.
I was quite surprised about it as I think like many I wrongly assumed that athiests would have more enlightened values towards women - but unfortunately just like in trade unions and other left leaning organisations - sexism knows no boundaries.
Rebecca Watson who founded SkepChic is a feminist and there are some interesting lectures on you tube from her around being a female in the athiest community and focussing on what the religious right in the US is doing to women.
You've reminded me that I've meaning to post for a while about a dreadful comment Richard Dawkins made.
Rebecca really respected and liked Richard and they were actually both on a panel at a conference in the summer.
where she talks about hate mail and rape threats.
Then soon afterwards Rebecca blogged about being propositioned in a lift at 3am after a conference (a different one I think) - she'd been talking about sexism and objectification etc and the difficulties being a vocal female athiest - then some bloke follows her to the lift at 3am and says he finds her very interesting. She said in a very light tone on her podcast "hey guys don't do that - especially when I've been talking about receiving rape threats etc" - anyway a whole storm blew up in the athiest community - how dare she have objected to this blah blah. Poor menz can't even ask women out now FFS.
See this blog by another athiest - then Richard Dawkins comments (see comment number 75).
The comment is dreadful but baring in mind that he knows Rebecca and has sat next to her on a panel with her discussing sexism. 
He basically wrote a satirical letter addressed to a muslim women "Dear Muslima"
extremely crudely referencing her "real" issues and telling this Muslima to stop whining because some american woman was asked for coffee in a lift in the US.
I was so fucked off when I read that. I had liked Richard's books but I cannot respect him now.
There is definitely a big problem with sexism in the athiest community. 