it was tried once on a specific forum, but it became so popular, it brought the server to its knees. It was then backed out. there is discussion of doing it again someday, but no concrete plans at the moment (to my knowledge).
 found this and this. [ February 07, 2006: Message edited by: fred rosenberger ]
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors