NICK DOUGLAS — Dear startup founders, this is what to look forward to: promoting environmentalism by dressing up "camo sumo" and smooshing yourself against your co-founder. I'd say "the loser is their dignity," but good on them for making Yahoo feel great about caring about the Earth for a week. At least Yahoo founders Jerry Yang and David Filo, unlike their CEO Terry Semel, didn't have to arm-wrestle Tom Cruise. Pick a favorite to win, then check out the full photo set.

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