This was posted somewhere else, probably buried somewhere in the forums now. I think the answer was that the submitter is also the game's creator and/or a friend of cg.
Edit: Here ya go:
http://www.steamgifts.com/forum/6uipz/fancy-beep-page
What a fancy BEEPing page. :P
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http://www.steamgifts.com/giveaway/0vhli/beep
It looks very cool, and I think all giveaways should look like this. I'm asking, though, why this is the only one I've seen that's like this?
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