Arrington posted over TechCrunch a perspective on AJAX Home Pages, interesting when you see every day a new AJAX Home page launched who is in reality holding the market shares. The Comscore report indicates that Yahoo! is the number one with 50.2 millions unique user followed by MSN (or Live), Google, AOL and Netscape. No doubt that Yahoo has the largest user database, but what I noticed is that companies such PageFlakes, Netvibes are not tracked by ComScore and not listed at all. I’m not sure what business model are they following, because with the number of innovations they are doing, the market remain owned by the known giants.