How much would it cost Apple to integrate a GPS bug, or whatever it's called, in all new macs? Somehow, only the owner would have access to the exact coordinates of the computer. Wouldn't this eradicate all theft of new macs instantly?

There may be certain, errr, privacy implications of that...

ok, maybe that wasn't clear:

"Somehow, only the owner would have access to the exact coordinates of the computer."

Note to self: Privacy issues should be highlighted in an explicit and unambiguous manner.