Do you mean groups like Sex Matters and For Women Scotland aren't on Facebook? I agree that's a big oversight. I can't believe groups like this aren't on Facebook through choice.
I am fairly sure both these groups are, and many others. But quite a few women campaign groups aren't.
And those that are will still start a discussion on twitter, but not on facebook.
And, which is an existing thread now, WPUK (to their credit) did have quite robust discussions on facebook, and it maybe the questioning some of their statements received, made them think about how in tune they are with GC women.
And althought it does happen, it is possible to make statements about TW are men etc. although it does happen that posts get deleted, but that will usely be because someone reports a post rather than a block. I assume this is what happens on twitter. Its not twitter HQ, it is other users who report.
By the way I am not saying facebook is great, but just in relation to being a campaign group and wanting to make contact with as many women as possible, at the moment this is the largest platform.
Personally I think it would be great if women came onto FWR and it became known that any women wanting to be in touch, have intelligent(!) discussion, share info this was the place to be.
Twitter is more like taking your chance in an adversarial free for all.
I not commenting on what individual women chose to spend their time on, but very much if you are a campaigning group.