Thanks for the feedback! I actually used to have the big vertical ad ("wide skyscraper") in the right sidebar (where the "Subscribe to updates" etc. boxes are)

Thanks for the feedback! I actually used to have the big vertical ad ("wide skyscraper") in the right sidebar (where the "Subscribe to updates" etc. boxes are) but it performed terribly. Putting it where it is now increased clickthroughs by something like 10x. BTW, Google's AdSense terms "[prohibit] placing ads under misleading headings such as 'resources' or 'helpful links.'" https://www.google.com/adsense/support/bin/answer.py?answer=136881 https://www.google.com/adsense/support/bin/answer.py?answer=...