My best guess for the big drops is that the financial year 2010 ends today, and these companies are trying to pad out their mobile app sale numbers before (or while) the quarter turns over. But whatever the reason, we consumers benefit -- if you've been waiting to pick some of these games up, now's your chance. And I think we'll be seeing a lot more of this. Companies, especially companies that have been premiering their apps as high as $9.99, are learning that dropping the price like this moves copies quickly, so as we move into the frenzied holiday season for gaming, we'll probably see more than a few big sales come down the pike. Stay tuned.