what do you need to qualify for google adsense?

[Jake]

Google always makes their user experience a high priority, sites with no rel redeeming properties or those that trick users into clicking ads would be rejected. They want to see a reasonable amount of quality, original content, for a blog this would probably be 5-10 articles of 500 words or more.

Approving the actual operator of the site is probably more important than the site, there is a fairly high incidence of click fraud in such ad systems, more so in second tier networks. Hence their requirements for somewhat difficult to fake identification.