synthese - 1:11 am on Mar 22, 2013 (gmt 0)
Just got out of a meeting with Adsense rep talking about this very thing.
This code has been bouncing around online for a long time, but its not good enough IMO (thus the reason for our meeting).
We went responsive about 2 months ago. It is challenging to adapt an existing site, and if you manage to lift metrics on your mobile size you are doing well. We've noticed a small improvement in mobile usage. Ads? They are tricky to get right at the best of times.