Thanks for starting this.

Some corrections I would make on the analytics numbers:

If analytics says 1 million visitors, I would halve that and still feel I'm overestimating. Remember, analytics can only count unique machines, not humans. I personally use a desktop, a laptop and a mobile phone to access LW, the phone has replaced another one I have used in the past for the same reason. Also, my computer has been through several formats. And that's not counting the many browsers I've been through or the occasional other person's computer I've used to browse LW. Overall I'd say I represent about 10-20 of these 'absolute unique visitors'. I may be an outlier, but given that this site attracts mostly technically savvy folk, I shouldn't be that extreme.

Also, your 2 million estimate is based on people with 130+ IQs, but you can't say the same of the analytics visitors. In fact, given the rarity of 130+ IQs, I would be extremely surprised if they represented anything more than 30% of total visitors ever.