I like the idea that a certain percentage of users are allocated to each level. That way, those that continue to enrich the site, will gradually rise, whilst those that have left will slowly decay in their level. Rather than a strict bell curve, I think a partly exponential drop off would work better:

It would also be a good idea to ignore all accounts not accessed in the last year, and those that have never posted when working out these levels.

Thoughts?

cLive ;-)

Edit by theorbtwo: Reparented from At Last, a Useful Definition of "Scripting Language" per consideration by the author. (And removed request to do so from the body of the node.)