Electronic Book Web has published an article that may be of interest called "The Future of Online Reference" ( http://12.108.175.91/ebookweb/stories/storyReader$2407 ). Representitves from Alacritude (publisher of eLibrary and encyclopedia.com), Questia and Encyclopaedia Britannica are interviewed. Sadly, our little project does not yet warrant a mention. ;-)
Stephen Gilbert