Most active members in the last 7 days mod
 

I would like to request a mod that lists the 30 most active members and shows a bar chart of each plus the number of posts made in the last 7 days... If there is a mod like this already out there please point me in the right direction. I've searched, but found nothing specific.

Sample image:

What do you consider most active? Most posts? Most visits?

I consider active as most posts (started and/or replied).