We've got 10 download codes for the "First Strike" map pack that dropped this week for Call of Duty: Black Ops, and we want to give them to you. But first, we want to make sure you'll put them to good use. So it's like this: like us on Facebook, then leave us a message on our wall letting us know why you want the map pack. It's unfair to pick the first 10, so we'll give you until 3pm EST today, and we'll send our 10 favorite responses the code then, just in time for you to enjoy them this weekend (and it's a Double XP weekend to boot!). Please note that these codes are for Xbox 360—sorry, PS3 folks, you'll get the maps eventually. Now hurry up and start liking us!