Mar. 30 2012, Erlang Factory SF Bay Area 2012 3.91
Oct. 07 2010, Ruby User Group Berlin 4.00
Jul. 25 2009, Rails Underground 3.86
May. 06 2009, RailsConf 2009 3.37
Delivery: 3.80
Content: 3.94
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Jul. 25 2009 , Rails Underground 3.86