I've actually found the block system fairly ruthless. Instead have a 3 strike you're out policy and add a timer. If you get the 3 strikes 3 times in a month, you get banned for a week, 2 weeks, 3 weeks...
This thread went way too offtopic. The word "sex" is not a bad word, and it is also another way to mean gender Unless this word is used in any other sense, it makes no sense to blacklist it. Therefore, if you see somebody using inappropriate language, please report.
To say this as in implying your going to do something to someone that is inappropriate, it depends how you use the word. I do see it a lot on creative and I know what you mean, I have to agree with you on this.
We recently updated PwnFilter and blocked this, along with a bunch of other inappropriate words. I don't see much of a reason to keep this thread open, so I'm going to go ahead and lock it.