So Rich,
You are a "Rock Crawl'n" Member, and currently have 58 Posts.
So according to the bar, you are 40.7% completed as a "Rock Crawl'n" Member.
So as you continue to post, that percentage will get higher and higher which means that you are becoming closer and closer to being a "Rock Master".
Up above in the Menu Bar, click on the Member section and you car see how we all stack up. I bet if you were to calculate various members %, then you could figure out what post counts are required to advance to the next stage.
BTW, see how you've got 2 Yellow Stars under your name? That means that you are in the 2nd level, which is a Junior Member which is denoted as "Rock Crawl'n".
And as for me, well I'm just special. "User Is Creator Of Everything Living", see?
Regards,
BigMike