neoncube The situation will differ depending on whether it is Memrise-derived or original. I was mainly thinking of the former.
Most courses brought from Memrise do not come with their creator, and even if they come, it is difficult to verify that it is really the creator. In this case, I think forking would be more appropriate than handing editorial rights to someone else, and would rarely be a problem.
If a course is created in MLWL and has its creator, it may be more appropriate to co-edit rather than fork. Even if forked, they sometimes would prefer to merge.
