Readie - 9:46 pm on Nov 14, 2011 (gmt 0)

The problem with just stripping it out is if a user has a legitimate reason for using that text, they can become frustrated. I've bumped into it on forums before, and it's really, really annoying.

It's not so much a problem with my implementation, where it's a rather obscure string of characters, but if someone is using the system Rocknbil showed above, where it's just a name in square brackets, that could cause issues coupled with your sanitisation.