You Say "Whiskey"; I say "Whisky"

I share most of the sentiments of this piece on 22 reasons to drink whiskey [ht RK]... with some exceptions.

#9. The past tense of "lead" is "led".

#21. I like smoky, peaty scotch, but don't you DARE put any bacon in mine. I'll have my bacon on the side, thank you. Sheesh. 

And is it "whiskey" or "whisky"? See this.