Valve's Gabe Newell has been having fun today emailing various sites with images that can be assembled into a single image. But there's more work to be done than that.Buzz over to
Valvearg and check out the incredibly Byzantine shenanigans currently in play regarding Gabe's messaging.
The fact that the first screen was sent to Halflife2.net and was entitled 'Beret's or Scoop' should not in anyway affect your judgement.
You will need to know, however, that "XORing each number with 0xFF (or, equivalently, subtracting the number from 255) gives us ASCII character codes which seem to spell out a message".
Ideas in Comments please.