I'll take the heat for the Porn question. When Polka Dot mentioned he was going to ask the question I threw in "yeah but how many have shown their SO their porn?" He was in NO way assuming all CDers have a porn collection so that was an interesting reaction some people have.
BTW a porn "collection" can be anything from two old playboys in a forgotten drawer or an old Sears catalog where you got your first glimpse of fancy lady clothes all the way to a gigabit hard drive filled with every hard core movie ever made.
I will say the reason I thought it would be interesting is that when I moved in with Polka Dot before we got married he never hid access to any of that so while I haven't sat down and watched the random stuff he collected over the years I did go through to see what he had found interesting enough to save. Then when we've been talking and he'll say "Well I'm not into that" I have said "so explain the *insert flavor* porn" and it's been a great help in understanding him because he's not good at expressing what's going on inside of him.
I find the reactions of people to that questions to be the most interesting of this thread. I noticed lots of protests and then the people who were not afraid to say they had something they considered to fit just quietly answering the questions.