User blog comment:DaNASCAT/Technical Update: July 9, 2013/@comment-5884303-20130715003207/@comment-5884303-20130715153210

Yeah, but if it were on the leaderboard page, it could be more of an incentive for a user to keep editing so they can find out how they can earn that badge. Also, at wikis like Brickipedia, it's not really a secret when you have several users earning it.