Regarding BDSM and feminism, there was an interesting development on that last month. The National Organization for Women has long had a policy statement saying that BDSM and portrayals thereof degrade women and promote violence against women. The minority within NOW that disagreed with that finally got a coalition together, with support from the National Coalition for Sexual Freedom. They hosted a series of discussions on the topic, and went to the NOW national convention.
Two of my friends were involved with this, and they were just worn out by the end. But, the NOW policy was rewritten to show a neutral stance on BDSM, a victory of rational feminism. Next stop, the porno policy.