Robby, you should add a topiccounter / day for example:
You do 1 topic every day.
1topic/day
You do ocasionally 1 topic.
0.5topic/day
...
#sothat
And a topicglobarcounter
For example- you have only 1 post in the forums.
So 1 post (0.001% of the forums)
...
#Sothat