This is for user contributions to be tracked here. Meaning, duplicates reported, errors found, imported movies and shows, etc. On the same, those who contribute and help keep the Trakt database looking better might get some privs or something. When things are found like missing artwork or duplicates, since users cannot do refreshes on their own, they need to report the issue, which helps Trakt and its paid users, and all users.
It seems that a lot of the errors that get into Trakt reply on users to get corrected, so this would just be recognition to such uers.
Dan Bovey commented
If you're passionate about this, you can contribute to Trakt's external sources for movies and TV. You can help improve data about movies on https://www.themoviedb.org/ and TV shows on http://thetvdb.com/
Trakt could definitely push this type of behaviour by asking for the user to add details and linking to the MovieDB or TVDB edit page when it finds missing data.