read so many different views on this topic but it all depends on how your site layout is imo.
i run over 25 wp blogs with adsesne on every one and been doing it now a long time ,I have found the best place is using the three allowed ads within your actual post and not on a sidebar
one very start
one middle
one end of post
usually each post is at least 1000 words long
after a long time watching clicks on each site closely this seems to be the best option for me
thoughts ?