When we are using the API Call to obtain an object like in this case 'viewer' using dataResponse.get('viewer') the spec mentions using it with getData() as dataResponse.get('viewer') .getData(), but that doesn't work on ning as dataResponse.get('viewer') returns viewer directly and that doesn't have the getData method.
Though this is a very minor difference, any variation from the standard will make developers life difficult. So guys please look into this and set it right :D
I don't know where else I should report the errors, so am posting here.
I have attached the two variations of apps for running on Ning and Orkut