While at InternetWeekNY I heard some people reference something called OpenCalais. It is a service that works with the content you put up (Blog, CMS, website, etc) and creates metadata based on the content. I have been checking out the website for it and I am still not getting the gist of it. Has anyone else seen it or possible even used it and could provide and explanation and/or review of the product/service. The one thing I have picked up on is that the service part of it is free for anyone to use and it has been built to handle a lot of traffic. The big word involved in this seems to be 'semantic'.