I will relaunch my fairly successful Adsense Website and I am looking for the ideal Adsense Template, as I will rebuild it from scratch: Where to put which Ads on a Information Website. Where can I "steal" good ideas?

For example,
  • is it better to put the ads above the fold (as Google says) or at the end of articles (as suggested here somewhere)
  • are more Ads better than few?
  • Skyscrapers left and right or only one side of the main content?

Any suggestion and experience appreciated!