Now this is a great idea from the folks at Mozilla labs:

Mouse-Based Ubiquity from Aza Raskin on Vimeo.

Although I love what they have done with the Graphical Keyboard User Interface (GKUI) original Ubiquity, at the end of the day browsing the internet is first and foremost a mouse based operation. No matter how many addons we install to get around this fact, including the excellent GKUI based Ubiquity, it is down right near impossible to spend a good browsing session on the internet as it exists today without having to turn to your mouse at some point.

I would love if Minimap could be designed around the approach of the mouse based Ubiquity, and if it gains enough traction or becomes part of Firefox, I will most likely move development to mapping based Ubiqs.