Bypass Censorship: Access Flickr in Iran, China, UAE, and Saudi Arabia

Not everyone loves Flickr. The photo sharing site has recently been
banned in China. This move follows similar censorship by the governments of Iran, UAE, and Saudi Arabia.
However, it turns out that they aren't being too sophisticated about the ban on Flickr. If you have Firefox, you can install an extension called
Access Flickr that lets you bypass the filter.
To be technical, the extension substitutes some parameters in the HTTP header that the government firewalls haven't been programmed to recognize and block. There isn't any need for proxies or more exotic measures like VPNs.