After tomorrow, chances are pretty high that a huge number of us won't be able to shut up for longer than five minutes without talking about something hilarious that happened during a game of Left 4 Dead 2. To perpetuate this still further, we will now have the ability to send our loved ones Holiday cards based on our favorite zombie-blasting multiplayer franchise. Valve is taking pre-orders for card packs now, which they will ship on November 30. A 10 pack of cards costs $15.95, and you can order them http://store.valvesoftware.com/productshowcase/productshowcase_L4D2-HolidayCards.html">here. There are also collections based on the original Left 4 Dead here, and Team Fortress 2 here. If anyone wanted to send us the "Engineer is credit to team" card, we certainly wouldn't complain.