Google Using Yahoo Libraries?
It seems that google is also using Yahoo Libraries. YUI is a product from yahoo, YUI stands for Yahoo User Interface. To know more about YUI visit http://developer.yahoo.com/yui/ . Google seems to be using yui for layout, as it seems like by the following URL, http://ajax.googleapis.com/ajax/libs/yui/2.6.0/build/yuiloader-dom-event/yuiloader-dom-event.js Clearly It seems like YUI is hosted on google server too. YUI is a great tool, it provides tools for creating rich web application and ajax tools.