How can a newbie or an existing improve his/her rank on bitcoin forum. What level of participation does such member need.
Let's have your submissions.
Increasing your rank has become a lot more difficult (some would say impossible without cheating) since the introduction of merit. You can still get up to Jr Member pretty easy but after that it gets increasingly difficult and I would say not really worth even trying. Here is a link to a post that should answer all your questions.
https://bitcointalk.org/index.php?topic=2766177.0