Adsense strategies? not really, I changed some slot placements, color, nothing that I would consider "strategy" but I've been focusing on the sites in general in the sense of: better user experience, and that implies considering the screen sizes and ad placements. I'm staying away from designs that only show the ad at the first tablet-smartphone-screen-scroll.
There were two "study" cases posted here that G featured on their page. I found a common thing on them and posted about it: no ads until you reached the third page.
Does anyone have success stories with mobile adsense and reduction of page load times? Might be another route to pursue although I've already spent days trying to optimise for mobile with really no noticable difference in ad performance.
I have a desktop version of my sites optimized for speed and diff levels of cache enabled, but that's not what I show to my mobile readers.
I have another "mobile optimized" version that I show to tablet and smartphone users, that version is responsive to diff screen sizes. Why not doing that with my desktop version? because in my case (and many others) the media queries only target resolution. There are things mobile users won't see, use or need, really, and we can skip that data.
There are sites with good responsive designs but hey, take a look at their css files... more KB than the page!, doesn't make sense. Sure you can achieve this in one CSS file from start if you put on some hard work. Anyway I'm using two versions and the server shows the right one for the user, I'm happy, they are happy, sites are fast.
The thing on responsive design is: doesn't depend only on media queries or how the site looks, deeply you have to take care on how much data is downloaded and how many http connections you need. My sites are fast on a tablet with the desktop design and FASTER with the mobile design.
My 10 cents.