<p><pre><code> "John is the guy behind the popular mongoDB ruby ORM Mongo Mapper."
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If you're looking at using MongoMapper in a Ruby project, be sure to take a look at Mongoid (<a href="http://mongoid.org/" rel="nofollow">http://mongoid.org/</a>) first, it seems to have moved quite a bit faster than MongoMapper and uses a lot of the good stuff shipped with Rails 3 like validations, callbacks, etc.