AdSense and AdWords Synergy

I just received a postcard from Google AdSense. Actually made money! $31.37

Our internet marketing class participate in the GOMC and received $200. It seems that in May AdSense on that site (and maybe some blogs) made about $25 back.

So it seems that if you put AdSense on the websites you run AdWords accounts on actually will give you back about 10% or some fraction of the money you spend on AdWords.