This one; http://news.ycombinator.com/item?id=2668346 There are actually a few s... | Hacker News

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qF on Aug 14, 2011 | parent | context | favorite | on: Ask HN: How can I do something meaningful?

This one; http://news.ycombinator.com/item?id=2668346

There are actually a few startups mentioned there which fall in the category that the poster is looking for.

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