Widgets rule. They're taking over the Web 2.0 world, as companies realise that the more open you are, the faster you grow. And if that involves people biting each other as Facebook Vampires, so much the better. Joost is the latest Web 2.0 outfit to get widgety. The online TV service has opened up its API, allowing developers to create their own Joost plug-ins. There's a dedicated website with all the documentation and tutorials eager coders will need.