Fetishes, kinks and BDSM - any questions

I've been meaning to write a post about the BDSM aspect of my relationship with Jack and Lucy but I'm not entirely sure where to begin. Jack wrote a fairly good post about our roles and our likes and how things work so I don't really want to cover the same ground that he did. I know what I'd have to say would be different but at the same time... it's the same relationship with the same people.

I thought I'd throw it open - is there anything you'd like to ask, are interested to know about that I could write about?