It has been my experience that knowledge of your partner and communication are the two biggest parts of any relationship, but even more so when it come to BDSM. To help with this i have used a check list of fetishes that i made from combining other lists and adding to it when new things have come up.
By having my sub fill this out it can give me a good idea of what she wants, has done, won't do, and where her limits are. This is nice especially for beginners that may not have thought about some fetishes or may not even know that they can be a fetish.
I was wondering if anyone else uses such a list?