Me.
There's one array of flagged phrases and another one of suitable replacements; there's a one-to-one correspondence between the elements of each.

With the over-used ones, it will choose one out of several replacements.
( The Mock TurtIe ™ --- Thinks you are a cunt, on, Fri 15 May 2009, 21:32, archived)

This is going to be a fantastic script.

( BraynDedd Natasha Kaplinsky's labia majora, Fri 15 May 2009, 21:47, archived)

Even in its early form, it's already making b3ta much funnier and readable.
No more AOL- or 4chan-speak. No more "shit", "dull" or "bitter" on /talk. No more "should of".

It's so effective that this post is now full of red text.
( The Mock TurtIe ™ --- Thinks you are a cunt, on, Fri 15 May 2009, 22:10, archived)

I might try this one.

( Wildheart Baby. Drunken Mess In A Good Way, Fri 15 May 2009, 21:56, archived)