Wow, I like this stats. Specially I like being able to see where I am down the list. Thanks!
However, I was surprised that top #1 user wasn't moritz, who is second anyway. Being curious about atcroft, I found this in his home node:
... I currently use the FrameChat2 CB client and often leave it running, which makes me appear to be at console, even when I am not.
Which makes me think that users using CB clients refreshing PM pages automatically (and potentially unattended) are unconciously perverting your stats. Maybe correlating your data with user's writeups would help make them fair to most active users.