Wade Curry wrote:


That's old news to lots of us, but I wonder if there would be a
similar effect for an open map database.  How would you keep it
open and still mitigate against errors, innocent or malicious?


Classify entries by whether they've been verified.
  (whatever verification entails)


Give privileged access to contributors

Allow database to be queried by users to include only data they
  trust.



The waymarking folk use a combination of these.

Basically, they've set up categories (Red Lighthouses, Restaurants shaped like crabs, McDonald's with pianos, whatever). With those categories come "category owners" (usually the people who submitted the category in the first place). Once you've gotten your category created, you are responsible for policing the data within it as far as verification (some categories require a photo), strictness (Red lighthouse might also accept mauve lighthouse, but Blue Lighthouses does not accept aquamarine lighthouses), etc.

In order to become a category owner, you must be a paid member (keeps out a lot of junk off the bat), you must submit your category proposal to the community, and the community must approve it.
More or less, it's still in Beta, so the rules are fluid right now.

-ajb


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