For moderating accuracy, partly Memrise driven, partly Memrise community driven. Like anything particularly bad would be taken down, anything particularly good by community standards maybe improved further
8/6/12, last update 8/7/12
(1 year ago)
Difficult. Courses (should) have different contents, so there are hardly two comparable ones in a topic.
There is kind of a rating system with the featured courses, which are approved for quality and content by the memrise team.