I think rankings depends upon the number of posts and number of days active . Also always write yourself and Dont do copy paste else the id might be banned for plagiarism.
You have been here for a while since you are a Sr.member then how does it come you don't know about the merit system!Activity is no longer the only requirement to rank up. You have to earn merits too.
For Hero member one needs atleast 480 posts
Hah... You made 1126 posts and have 540 activity but didn't rank up to Hero!! 