Best placement of advertisements in classic pages

A classic page may be described by:

Heading
Sidebar

Title

Leaderboard

 

Body / Rectangle

Footer

The best placements

The simpler placement is at top a 728 or 468 width unit of contextual ads, below the banner and above the title. However these ads are often ignored by visitors.
According to Inside Adsense a better placement is
- a leaderboard below the title when the text is long, plus
- inside the body of the article a 300 x 250 pixels width rectangle.
If the article is short, a 300 x 250 rectangle at the beginning of the text is enough.
These placements are very payful.

Reference

Adsense Adsense tutorial - Ajax and Adsense - Best placement - Thing to avoid - Adsense behaviors - Tips - Adsense code checker - Adsense General FAQ - Glossary