The one that gets me is people typing it as "2K12". Wait, what?
The old idea of writing it as "2K" did in fact save two extra keystrokes- well, one if you capitalized the K. Then it went to "2K1" for 2001, "2K2" for 2002, etc. Now you're saving just one keystroke- or, again, none if you capitalize the K.
If you capitalize on "2K12", you're actually using more
keystrokes to type it rather than just typing 2012.
Sorry, just got caught up in the mood.