For those who don't know, a "Regex" is a "Regular Expression" which is a term used in computer programming languages (such as PERL), where a coder can set up a filter that can search for patterns.

My suggestion would allow one to store up to, say, 20 Regexes client-side, and these regexes would be used to filter the chat window, so that anything matching the regex would be automatically gagged (filtered out) so that we don't see the offending messages. For example, if I put a regex that filters out "w w w", that would get rid of 90% of all RMT spam. I'd also add "GAMER+EASY" and "igfans" to that too, and several other commonly used terms ("3w", "cheap gil", etc).

This would all be handled client-side and by doing such, I would nuke almost all RMT spam and if a new one popped up, I could just simply update my regexes.