A while back, there was a thread about assigning "ranks" to each member based upon the number of posts they had. Here is the link to that thread: User Titles Thread.
Basically, each member is assigned a Forum Rank based upon the number of posts they have. I believe this is the final criteria that was adopted by the group.
Forum Ride Along - 0
Forum Probie - 10
Forum Crew Member - 30
Forum Lieutenant - 100
Forum Captain - 250
Forum Asst. Chief - 500
Forum Deputy Chief - 1,000
Forum Chief - 5,000
The only time your Forum Rank makes a difference is when you are trying to post some advertising, in which case you must be a Forum Probie with at least 10 posts, none of which can be advertising. The Guidelines for the Forum can be found here: EMTLife Guidelines