I know lots of people have seen the spam by now. These random button mashed keys enter the room and spam like 4-5 times then disappear. They advertise their illegal server and it's really annoying because it spans the whole chat.
I also know mods can't be in every single room but tig needs to know about this so he can put select words like "Super mice" + "http://hsfhfhsfgj.dhsfd.gov"(Fake address for example) and before it's sent through server. It's rejected. This way anytime those two are combined it's rejected. It can be done since I'm a programmer. So don't say it can't.

Or tig makes a new spam filter that you can't enter more then 120 letters like twitter or something stupid like that

It is not possible to stop spambots by your recommended measures.