Yes. Your rank is based on the number of posts you make. They proceed as follows:
The Rankings
1 - Poppler
5 - Crustacean
50 - Delivery boy
100 - Bending unit
500 - Starship captain
1000 - Professor
1800 - Liquid emperor
3001 - Urban legend
6667 - Space Pope
10000 - DOOP Secretary
While the more you post, the higher your rank goes, there is no advantage to being a higher rank, and if you start posting just to ascend the rankings, you may find yourself in trouble with the moderators.
Also, this thread, as well as the others you've started, have already been created/answered at some point or another. Take advantage of the search feature if you can. In fact, read this:
PEELers' FAQ.