I tweeted this URL from my @oauth_dancer account and after the cache had a chance to clear up, your numbers have begun incrementing. I’m not sure why it didn’t find earlier instances of your URL, but it looks like you may have some misconfiguration of the Tweet Button on your site.
Right now, the page is generating a link to the share intent (part of the Tweet Button) like this:
http://twitter.com/share?text=LittleBigPlanet+2+Move+Pack%3A+Questions+And+Answers+-&url=&counturl=http%3A%2F%2Frocketcheetah.com%2F2011%2F08%2Flittlebigplanet-2-move-pack-questions-and-answers%2F&via=
Notice that the URL field isn’t being populated with the URL for the page (but counturl is) – this will cause people using the tweet button on this page to not actually tweet a link back to your page, as the URL won’t be included in the tweet. It’s also not a good idea to include parameters that you aren’t providing values fro (like the “via” parameter)
Hope this helps.