to add to this, I can't seem to find a way to deauthorize a computer remotely

There's an option in the iTunes Music Store Account settings to deauthorise all the computers you have authorised. I had to do this recently - http://www.apple.com/itunes/features/ says :

Authorize and Deauthorize : Purchases you make from the iTunes Store can be played on up to five computers that you authorize using your iTunes Store account name and password. To authorize or deauthorize a single computer, choose Authorize Computer or Deauthorize Computer from the Store menu. If all 5 authorizations are being used, you can deauthorize all your computers at one time by choosing View My Account from the Store menu and selecting Deauthorize All.

Doesn't stop your problem when you get past five machines, but really who is actively using that many machines to manage their music?

Or, how about public infrastructure that is publicly owned, there's a genius idea. No monopoly, all carriers can have access to it at standard rates. But then the next Liberal government would just sell it anyway...

I can't believe I had to scroll so far before I found someone who had thoguht of this...