Beer and VoIP are they compatible?? This is shaping up to be one of life's great mysteries. I think I need to go get a beer, Homer Simpson would certainly approve.
Given the likely sound quality of Labatt's VoIP service, I'd say they'd be compatible enough that you wouldn't be able to tell that the person on the other end drank a bit too much Labatt's (or that they didn't, for that matter.)
