Question about Forum

I'm sorry if I missed something somewhere. I tried finding info in the rules and guidlines but didn't notice anything. I notice I have a tag under my name that says Quiet Traveller, while some have Professor, Citizen, etc. I was just wondering if this is something based off of amount of posts or if it is editable somewhere, or what?
I have no interest in spamming posts just to change that tag if that's what it's about, I was just trying to figure this out.

I believe your 'rank' is based on your post count.

Well look at that, you appear to be right! I just noticed as I came back to check for an answer that I've gone from Quiet Traveler to Citizen. I'm finally accepted! LOL
I would guess, then, that it's based on your per day post count and not your total amount of posts? I'm sorry if this seems silly, I guess I'm just an overly-curious type fellow.