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Comment by garaman on Money: The Unit of Caring · 2011-12-03T18:01:00.508Z · LW · GW

" we could write an algorithm that gives stuff and people get expert cred when they are upvoted by the established experts"

Sounds like StackOverflow (http://stackoverflow.com)

It is a domain-specific community (everything about software development), in the form of questions and answers. Reputation is earned by upvotes from other community members. Naturally, the established experts emerge as high-reputation members, being those with a long history of giving good answers.