Look
here and
here.
You're right that FAQ doesn't appear to address this, while it should.
To summarize the current numbers:
First box: Ratings.
<4 - none, 4-4.5 - trusted, 4.5-5 - proven.
Second box: # of posts.
<195 - none, 195-2000(?) - active, >2000 - enthusiastic.
Third box: Logins.
250 - veteran.
Since the forum system was changed a few months back, you can see users with ranks like Proven Active Member. This is because they have no logins yet in the new system.
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