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That's the gauntlet laid down by the Altruism Challenge, a site that aims to raise money for the World Partnership Walk, Canada's "largest annual event dedicated to increasing awareness and raising funds to fight global poverty". Canadian Nadir Ebrahim wrote to us explaining the site's aim: to raise $10,000 from social media users. Additionally, the Canadian International Development Agency (CIDA) will match the funds raised dollar for dollar.
At the moment, Facebook is the most altruistic network by far, with Twitter second and Digg in last place. Which social media site will you be donating on behalf of?