You've got 10 minutes of downtime and a smartphone. Do you a) destroy digital zombies or b) save the world? Jacob Colker is betting people will choose the latter. His company, The Extraordinaries, matches smartphone-wielding do-gooders with worthy tasks that take just a few minutes to complete. Colker says "microvolunteerism" is perfect for introducing the Facebook generation to the "warm fuzzy feeling of doing good."
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