As for spill naysayers, a quick search for the term "spill", in just this forum, netted 6 results where the last update falls in this month. So yea, people do drink and Air.
Nobody is arguing that a number of people have spilled - I'm just not sure how it happens. I drink coffee in the morning when I am using my MBA, but don't hover the cup over the keyboard when I drink and have never spilled anything on any keyboard - maybe I'd change my mind if I had an accident.