This official news post is copied verbatim from the RuneScape website. It is copyrighted by Jagex.
It was added on 28 July 2003.
It was added on 28 July 2003.
A problem which was causing the chat-filter to incorrectly filter things it shouldn't has now been fixed.
We are now using a more advanced system which shouldn't cause so many false positives and so should hopefully be much less intrusive.