Google has had a video with AdSense optimization tips for a good while. They have just recently updated it with some new tips that some could find useful.
If you are looking for some tips that could possibly help you get better AdSense results, these tips from Google might help. Here is the Google link OptimizationDemov1
If you are looking for some tips that could possibly help you get better AdSense results, these tips from Google might help. Here is the Google link OptimizationDemov1