How much traffic do the biggest typo domains get?

There’s an article on searchengineland today about domaining and how Google and Yahoo “make money off a twitter typo domain”. I’m not sure I’m as excited about exposing this travesty of justice as SEL is, but I was curious how much traffic typo domains get:

Alexa domain typo traffic

In my brief research I found facebok.com was by far the biggest winner with twiter.com running a distant second. But their traffic dropped off to a trickle middle of this year. I wonder if facebook themselves or a popular app mistyped a URL somewhere and then fixed it.

Other variations of facebook, twitter, google and myspace didn’t yield much. I entered a high traffic site who’s exact numbers I have access to for comparison and by my estimates facebok.com was getting just under half a million uniques per month. Nothing compared to the real FB, but slapping remnant advertising on there would yield $1000 to $5000 per month. Twiter.com gets around a quarter million uniques per month netting around $500 to $2500 on remnant ads.