I found this blog post about stack overflow's experience with advertising very interesting. http://blog.stackoverflow.com/2009/11/our-amazon-advertising-experi

I found this blog post about stack overflow's experience with advertising very interesting. http://blog.stackoverflow.com/2009/11/our-amazon-advertising-experiment/ http://blog.stackoverflow.com/2009/11/our-amazon-advertising... "So, onward to plan B: we now auto-insert Stack Overflow affiliate info into any amazon book links posted on Stack Overflow. Oh yeah, and here’s the kicker. These silly little rewritten text links work 200%-300% better than our custom amazon book ads!"