Blacklist

How do I get the blacklist to work? I type in certain tags, such as bdsm, and it doesn't work.

Put each tag on a separate line. Tags on the same line will only block posts that have all those tags.

Could a mod sticky this or something? This question comes up a lot.

howto:blacklist would be an acceptable alternative with it linked somewhere obvious, not sure where that would be though. I suggested this last time but I am kind of bad at writing howto things.