I love it! Potential problems though:

1) I use my work machine and am therefore very cautious as to any software I download. This may be prohibitive for several other users as well.

2) I may not always use this computer. If I use my wifes laptop or if I am at a friends place, they may not want me installing more crap on their computers.

I love the idea though, and despite these "obstacles" I would certainly still give it a shot!