Google Page Creator is not the first to offer do-it-yourself web site creation. Geocities, now part of Yahoo!, and many others have offered long ago 'easy' means for the pubic to create their own web sites without having to learn HTML or other web technologies. The spin Google has added is to use AJAX instead of low-usability forms or relatively heavy Java applets to enable users to develop their sites. Google again is pushing users towards the web, making the browser as powerful as desktop applications, and is doing so through AJAX.
Perhaps Yahoo! will respond with an AJAX web site builder. Who knows.