People!

We are having a discussion in the office and can't come to a conclusion. The question is: in what case the person earns more money on Google AdSence:
1. To have one very good blog with extremely good content (like http://www.boingboing.net/)
2. To start many blogs, to write 3-5 posts and generate traffic to them (like , http://stockmarketticker.blogspot.com/, http://marketstockinvestment.blogspot.com/, http://softwarestockmarket.blogspot.com/ and http://brokersofstock.blogspot.com/)