Your iPhone PIN Redux

Someone at work pointed to this yesterday (and I see Slashdot has a post).  If I point back here to my earlier post (TL;DR -- PIN selection is important if you're worried about the cops copying all your emails off your iPhone), one of the things I said was that for most people the 4 digit PIN would be fine, especially if you're backing up regularly and you've set the data wipe option (kicks in after 10 failures).  Well, make sure it isn't one of the 10 most popular PINs from that first link there: 1234, 0000, 2580, 1111, 5555, 5683, 0852, 2222, 1212, or 1998.