There are over 250,000 applications built using the Twitter API. To use most applications, you first authorize the application to access your Twitter account, after which you can use it to read and post Tweets, discover new users and more. Applications come in many varieties, including desktop applications like TweetDeck, Seesmic, or EchoFon, websites such as TweetMeme, fflick, or Topsy, or mobile applications such as Twitter for iPhone, Twitter for Blackberry, or Foursquare.Update 1: New authorization rules for applicationsStarting August...
