I set up a Micah World group in Yahoo's March Madness pool. If you think you should've received an invitation, you likely did. I used their invite system, but fear that either: a) the e-mail will go directly into people's junk mail or b) they won't recognize me as the sender ("linus316"). So, check your e-mail, folks, and join the fun. Picks need to be made by 12:30 pm on Thursday.
(BTW, if you didn't get an invitation and really want in, drop me a line.)