I think there are some things best left to fantasy, and stories are fine for those. This place is our version of Hollywood, I guess. Slave auctions, as one example. I don't think we really need to bring back the moral issue of selling human beings. But as a story device, it's something I could see writing about, and as fantasy I can see the appeal to it. In fact I've only ever personally read stories that had women as the slaves being auctioned. I might try writing a Femdom slave auction of men some time, just to give it a new twist. I even had a dream about that once.

Would I ever really want to be auctioned (or for that matter actually buy a human)? No way. First of all I'm happly with someone and secondly, I just wouldn't take well to being treated like property to that degree. But as fantasy, it's a thing I can see working with and having a lot of fun.

The biggest difference between real BDSM and the fantasy that I've seen is I read a lot of stories about people being "forced" into the role of submissive. Now me personally I don't always go along with saying that's good entertainemnt (though it is possible) but in real life I have a much harsher term for that, and would never condone it, as most true lifestylers never would.

As for the scat/pee thing, that's a very hard limit for me, but I guess some people really do it. I honeslty can't imagine why personally but to each their own, I guess.