Philipp Lenssen on Google Blogoscoped writes, “Putting your sponsored link on the WordPress.org homepage will cost you $20,000 per day“.
According to AdBrite, WordPress only recieves 11,000 unique users a
day. For a 7 day text link costing $100,000 you’ll get an average of
2,338 total clicks. That works out at $42.77 per click or £24.49 a click in sterling.
According to Google Blogoscoped, WordPress has a pagerank of 9. I would
guess that if anyone was to buy an advert on the WordPress homepage
it’d be for the Pagerank rather than the clicks