“Ruby script to parse the user xml feed from twitter and return either your most recent ‘tweet’, or an array of all your recent tweets.”
Documentation on the “Rubilicious” del.icio.us api wrapper.
Juggernaut for Ruby on Rails initiates a flash xmlsocket between server and browser allowing real time communication between the two. This opens the door to all sorts of functionality such as chats and collaborative wikis/cms.
Learn Ruby with cartoon foxes