Check it out: Etherpad! "EtherPad is a collaborative, real-time text editor created by, among others, two ex-Google employees. An EtherPad document is quickly set up without any need for registration. You can then share the URL of the document, and others who will visit that page will then be able to see, in real-time, whatever youâ€™re typing. This has an interesting feel to it because thereâ€™s no "security buffer" as in typical chat programs: every letter you write will be shown as you write it, including occasional errors before you fix them." They're in beta at the moment but I seem to have gotten a pass. Remember those threads where you add one sentence to a running story and it quickly gets out of hand? Let's make a new one on Etherpad and edit it live. Link to the story is here. Everyone add a bit to the story and don't go messing other people's lines up too much.