Lively discussion about MapRoulette on the #OSM Community Forum. What do you think? https://community.openstreetmap.org/t/maproulette-critique/116922/1
@MapRoulette I like some of the suggestions (publicly show owner, allow private messaging to owner, make it possible for flags to block challenges until discussed). Doing a call for a challenge vetting group could also help.
My own pet peeve would be that instructions should get more space in the interface, and have a clear visual cue if shown incompletely.