Twitter has been warning for weeks that it would shut down TweetDeck's AIR and mobile apps sometime in early May, but it didn't say exactly when loyalists would finally have to move on. The company now has a firm date: May 7th. In just over two weeks, Twitter will both pull the apps from their respective stores and stop existing installs from working as the service's version 1.0 API rides into the sunset. While the persisting
