After writing a little about spelling reform not long ago (here, for example), a contributor just passed along this link about leet speak. Little bits of leet have been appearing here almost since the beginning, of course, although I don't think I've used the term.
The wikipedia entry has some of the expected shortcomings: A cropping of elite to leet is hardly 'degenerative' (though that's not quite the word they wanted), and "technically, an argot" makes the definition of argot way too precise-sounding. But the table is cool, and not all of the morphology has been chewed over on linguistics/language blogs that I read.
Anyway, it keeps occurring to me that leet is some spelling reform I could get behind, or maybe more like free-form spelling. Here's a way to nurture creative use of language (in some sense, anyway), and it's a far more fundamentally positive thing to play with than insulting how wait-staff talk or enforcing the use of new epicene pronouns in scholarly books.
I've been asked to offer a tip of the Mallards cap to Ben Frey for the link. And oh yeah, image from here.