Review my Startup - Preceden
djb_hackernews: Definitely a cool little webapp, and I can see it being more popular as an embeddable widget.Head scratcher how to monetize, because I don't see your website being a hangout so you can't go with ad supported, and I don't know if it is useful enough to pay for.You could sell it to evite, meetup etc. maybe. 
Or some type of project planning community for Gantt charts.