I have noticed something interesting regarding pandalized site and ads above the fold. One of my website have suffer due to panda, wonder what may be the reason. But when i copy text of first paragraph below the above fold ad and paste that copied text into google, Google seems to have found nothing as this text was not indexed, whereas when i copied text below the same page it found that text from my site on 1st or 2nd result.
What is that ? Does that means content just below above fold is de-indexed and affected rankings?
Any body else noticed that?