I agree with that completely, it makes sense.

As for the spectre of abuse; in the short term, yes. Yet that's why I was careful to state mean traffic numbers over a given length of time (perhaps 3-6 months). It's easy to cause a momentary spike. It's far harder to keep people's attention on being disruptive over a much longer period of time.

So, perhaps the easiest way to do it is to look at our least active forums we consider to have reasonable levels of activity for each area (Airlines, Hotels, etc... we'd want to be reasonably granular). We take averages over a timeperiod decided by TB (perhaps the last 3 months, last 6 months, last year, etc) and set that number as the baseline. Obviously that's oversimplified but IMO that's a fair way to handle the issue.