Lol funny but redundant
valve got that logo when they came out with source when they made hl2 and as L4d is actualy just a test game that wasent actualy suposed to amount to much (a test for thier gibiting system that they are going to put in EP3 as portal was a test of there portal tech {which may i mention is hard to do! you may have seen games with portals well its not the same. those portals couldent move, bullets wouldent pass though them, and you couldent stand in betwwen them. all they where was a affect that moved you from one place to the other when you steped in a spot.} and the gibbiting shall be amazing.) but its still funny as heck.