I thought about that, but aside from bug fixes, I can't really give it much time at the moment because of my classes (final year). I did play with some affiliate links from http://udemy.com for a while but it didn't work out so I dropped them and added Flattr instead. Definitely something to explore again when I have more time. Thanks for the pointers.
Yeah I don't know how much traffic you get, but I have just a small page (read blog post) that does something similar (popular books for a certain niche) that I wrote a couple years ago that makes several hundred dollars a year. Traffic to it isn't huge either. The CPM for me is like $40 on that page.
