Now Google is coming out with an Ajax based calendar. I would assume Yahoo to follow suite in about a couple of months. I like Yahoo for almost everything they do but they are such copycats. Yahoo reminds me of Microsoft and how they would copy the cool features of their competitors and build even cooler ones of their own. Yahoo copied from Google Maps, GMail and now calendar. Long live Yahoo! There is something very reassuring about a company that never needs to have an idea of its own.