I took time to look into the comment made that triggered this topic and did put my findings on the Conversation tab of the challenge. Yes, you have to log in on with your OSM credentials on Maproulette to view it, but logging in makes sense I think.
Also that information is available for this challenge I found, see for instance this task.
I am far from sure this is the good/best way to discus things but the good news, for this case, is that all information is there.