The Activity Constant (or AC) originally stated:
The Activity Constant for a game in forum Mafia is equal to the quotient of the number of posts squared and the product of the number of real-life days the game has elapsed and the number of views, or:
AC = posts^2 / (rl-days*views)
An AC of below 1 indicates a below average activity level.
An AC of above 1 indicates an above average activity level.
An AC of exactly 1 indicates an ideal activity level, also known as activity equilibrium.