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by benwalther 5935 days ago
Check out CouchSurfing for an example of how to solve this problem. Craig is just talking about how to make it universal rather than site-specific.

CouchSurfing provides enough trust data that you'll have someone into your home based on a web profile. Some of the mechanisms include personal references, friend lists, community awards (that are meaningful and hard to get), and unrevokable vouches.