One would assume that since they got accepted into YC that they had a pretty good hypothesis of what their target market could be. But it's not clear from their

One would assume that since they got accepted into YC that they had a pretty good hypothesis of what their target market could be. But it's not clear from their website what it is (and it doesn't look like it's an IDE). The OT technology that powers stuff like this is interesting but is being rapidly commoditized by JS libraries (check out the awesome ShareJS http://sharejs.org/ http://sharejs.org/ for an example). So what makes these guys interesting hopefully isn't the tech itself, but the market they want to bring it to.