I really like this addon but with my latest reinstall of Firefox it doesn't work with Google anymore. Every time I am on a Google search page the extension's toolbar icon turns from green to red. I don't have a clue as to why this is happening.
Ok, I figured it out. Somehow Google.com got added to the blacklist for this extension. I must have accidentally hit a key combination that added. Probably a bad idea to have a shortcut like that for this extension.