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적색스테인
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uxgkETkqQfFpjBxvzL |
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| Whereabouts are you from? http://nudevista.in.net/ nudevista Shirky thinks educated people around the world have about a trillion hours of free time each year that could be contributed to collaborative projects, a phenomenon he calls "cognitive surplus". |
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Robby |
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2020-02-06 20:41:51 |
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