There is now an extension for Google chrome to check the page rank of a website easily. I’ve been using this extension for quite some time now and it’s really helpful to find out more about anysite site.
Note: You need to be using the beta version of Chrome (4.0+) in order to install extensions.
TO install

Google announced today the launch of the beta portal for Google Chrome extensions. Developers have already submitted some addons in recent weeks. The first extensions are only available for Windows and Linux, but Mac is coming soon. The gallery is currently taking over 300 extensions, some of Google itself,
What Google forgot to mention in its

Themes have been available on Chrome for a while, but they used to require you to download files and know which folder to drop them in. It was also hard to revert to the original one. This latest build allows for push-button skinning and an easy way to revert. You can find two of the