Can PPC advertisers bid higher than their target and make up the difference in volume?  That was the question.  Now there are many websites that will give short (but still valid and helpful) answers –  and yes, sometimes a quick answer is all you’re after.  However, this article goes beyond a simple answer and actually uses mathematical formulas to prove their argument.

Proof via Logic

I had to post this if only because the nerd in me loved it.