Very nice! Rated 4 out of 5 stars

I really like this, and it will definitely be really useful. The only problem for me is that I also use the googlepedia addon which is also insanely useful. Because this takes up relatively less screen space, is there anyway you might be able to code it so that it sits on top of googlepedia, rather than making a seperate third column to the left and forcing the actual google results in to a tiny column on the right?

That would be brilliant! Thanks for this though, like it lots :)

This review is for a previous version of the add-on (0.3). 

Support for Googlepedia

Hi Sauntimo. Thanks for the nice comments. I just released a new version (0.5) that should work well with Googlepedia. It adds a button so that you can easily switch between Wolfram Alpha and Googlepedia. The button will only appear if Googlepedia is installed. I haven't contacted the Googlepedia author about this yet so this is only a trial feature for the moment.