Using the Adwords keyword tool, what % of the highest estimated bid do you actually make in Adsense for the keywords you are targeting? For example, the estimated bid to Advertise for "widgets" on Adwords is $1.00 - you make .10 cents per click with Adsense for that keyword, so you actually make 10% of the estimate. Would be interested in seeing what kind of return others are experiencing.. Mine is only about 10%...