A url hash that starts with an exclamation point is a convention created by Google to allow Ajax web apps to be crawled by search engines. http://code.google.c

A url hash that starts with an exclamation point is a convention created by Google to allow Ajax web apps to be crawled by search engines. http://code.google.com/web/ajaxcrawling/docs/specification.html http://code.google.com/web/ajaxcrawling/docs/specification.h...