What tools or metrics do we have to measure the health of the ServerFault community? I mean that are available to non-moderators.

I've read lots of debates here over the years about how healthy the community is. I'm not trying to reopen those. But just now, I was looking at the Questions feed on the home page, and I noticed that of the questions on the first page:

• 20 were from authors with reputation 1
• 15 were from authors with reputation 2-300
• 3 were from authors with reputation 301 or higher

It's great that we have junior sysadmins who come to learn, but this seems like an unhealthy balance. But it's just anecdotal.

So what metrics can we go and look at that try to answer the health question?