If you really contribute something to the Forums like Chasing Trolls in ForSaleTrade, Chasing Deals in Hot Topics or Chasing Tech Answers in the others, then you'll be considered for Elite.
If you only randomly post in threads to be funny and seem witty, then you'll stay a Diamond Member, etc. Like me.
If you post one sentence responses thirteen thousand times, you get a special title, like "Lifer"