Fh already has that system actually just in forums. I don't know did you mean somehow in-game or in forums. But this is in game options so did you mean in-game?
Btw here are the forum ranks.
Newbie: 0 posts.
Jr. Member: 25 posts.
Sr. Member: 50 posts.
Experienced Member: 100 posts.
Dedicated Member: 250 posts.
Full Member: 500 posts.
Elder Member: 1,000 posts.
Elite Member: 1,500 posts.
Hero Member: 2,500 posts.
Lengendary Member: 4,000 posts.
Sorry if I understood it wrong.