I'm not a big fan of scat or animals either. Although if the story is well written those things aren't going to stop me.

If a see a story that has like twenty codes attached to it, for some reason that discourages me. It always makes me think the story isn't going to have enough focus on any one thing or event and that it will just bounce around a lot in an effort to cover as many bases as possible. But again, I'll give a story a chance despite the impression I get based on the codes, and I'm often surprised to find my initial assumption wrong.

I'm not a huge fan of F/m but F/f is cool. I prefer M/f in it's many varieties even M/m is fine. I'm not a huge incest fan, but again, if the story is written well, it doesn't seem to matter.

Codes I look for: D/s, bondage, rape, nc, reluctance, violence

But I agree a good synopsis is preferable. I'll always take a look at the story regardless of the codes.