Web AppsQuestions about web applications with offline modes (like those enabled by Google GearsGoogle Gears) should be allowed to be asked on SuperUserSuper User because they have code that executes from your PC and perform the same functions as other offline programs.
Also, RESTfulRESTful applications that interact with websites should be allowed. I'd be annoyed if anyone closed a question related to TweetDeckTweetDeck, but not surprised if someone closed closed a question related to changing your picture on Twitter.