slyroon said:
You can use the metatag inpool:true -things_you_don't_like to search for pools, containing things you like.
But this won't give view like here which is better when browsing pools.
Also if there's pool with e.g. 30 pics, and 29 blacklisted, then that one not blacklisted will still be in the results. I think that dreich wants to find pools that doesn't contains any picture with blacklisted content. Like if you blacklist castration you won't get pool #903 at all.
Updated by anonymous