Apple has created a Twitter account for the App Store, so loyal followers can get timely updates about the latest and greatest applications available. Hopefully, Apple will use the service to distribute promo codes and highlight lesser known applications, but they seem to have already sold out with the first few tweets.
Welcome to App Store on Twitter! Follow us to discover new apps, get exclusive offers, and share with friends. #appstore
Apple also recently created Twitter accounts for the various types of iTunes media.