How Google Maps work

How Google Maps work: "By now, many of you will have gone and tried out the new Google Maps
application. By and large, you have to admit that it's pretty damned
slick for a DHTML web application -- even my wife was impressed, and
that's not easy with geek toys. So, in the spirit of Google Suggest and
GMail, I've decided to have a quick peek under the hood to figure out
what makes it tick."

A very nice and knowledgable article about how Google Maps work under the hood, I have already ditched Mapquest and Yahoo Maps for Google, if you haven't yet just give it a try.