As we reported on this blog back in November, Suns star Shaquille O'Neal's on Twitter, the "micro-blogging" site where users can post short messages on the Internet (through computers or their cell phones) that detail what they're doing at any given moment. (For example, Shaq Twittered on January 16 at 10:57 p.m.: "I cant sleep gotta get 2 walmart"). But it was this Twitter from Shaq last Thursday that really caught the attention of Twitter users in Phoenix: "Im at 5 n diner n phoenix."