It's also not a gaming system, yet people make games for it. They also make 'notepads', and mp3 players, when its an IRC client.
Yeah, "people do", these functions are not built into mIRC and nor should they be. /splay is different - it doesn't require Megabytes of dictionary files and nor does it do anything but kick WMP in the guts.
UPDATE: Good Lord, I just realised how old this thread is...