I know, I know. You thought the hype over Twitter for BlackBerry was over. Not quite. We have some extra invite codes lying around CrackBerry Headquarters, so we figured now would be a great time to let them loose so some lucky winners can officially get their hands on RIM's Twitter client. Our original giveaway was a big hit, so hopefully this one will be too. Now I realize 15 codes isn't a lot, but hey its better than nothing. Hopefully the client will be released soon, so don't fret. To enter to win one of 15 invite codes, just leave a comment on this post. Winners will be picked at random and the contest ends this Sunday at midnight PST. Oh, and if you're not following us on twitter yet, you'd better get on that -- @crackberry.