An excerpt from the post
The head of Google’s web spam team, Matt Cutts, shared the news when speaking at the Pubcon conference today.
Cutts said Google is testing algorithms that determine ”what are the things that really matter, how much content is above the fold.”
Adding further, Cutts warned:
“If you have ads obscuring your content, you might want to think about it,” asking publishers to consider, “Do they see content or something else that’s distracting or annoying?” - searchengineland
I do realize that there are many blog that are full of ads until a level that there are more ads than content. If your blog are like that. Its time to remove some advertisement.
By having lesser ads in blog, you can focus more on other optimization factor like placement, colour, etc. For adsense blogger, its not an issue. Since the more ads unit you have the more irrelevant ads are displayed.