When traveling in China – testing web accessibility

For those who occasionally travel to locations within China, you all have experienced the blocking of certain web sites from within the country.
I recently stumbled into a web site which allows you to test whether your favorite site is accessible from within the PRC’s firewall.
Test your favorite web site from Shanghai, China.
Since I know I find myself traveling to Shanghai and other locales within PRC, this was previously information I didn’t have an easy way to know and I figured others might find it useful.
Thanks,
-Mike Rothman