I think there are a few "Girls only" threads here and there...just gotta find the good one that doesn't die off.
But if you're okay with just joining any gathering whatsoever, instead of just posting a new thread, try and join up an existing one! Most of the new members that I see are "Hey! This is me! This is my e-mail, do PM me if there's anything going on" and then nothing happens to them at all...so take charge, and Seize The Day, Maria!
I keep mine alive every week in the 20's club. 30's club also has a few, like the brunch club...
By the way for the girls, I hear they get harassed through e-mail by some shady guys...so just be careful in here Maria...
I haven't gotten any complaints for "harassing" the people with my e-mails every week though...