User blog comment:TotalDramaNaruto/The Extreme Expedition: The Redux - Re-Introduction and Regulations/@comment-24466939-20151125050602/@comment-2114961-20151125063744

Mainspace generally means any edits on actual pages. (Characters, episodes, etc) and not edits on Userpages or blogs. It was a common requirement to do wiki run activities. but I guess since alot of people are newer here, it doesn't apply well anymore.