I just saw Google's latest update in which Google is saying it would not give priority to websites having too much ads on its page, just wanted to share this update.

2014 Updates
Page Layout #3 February 6, 2014

Google "refreshed" their page layout algorithm, also known as "top heavy". Originally launched in January 2012, the page layout algorithm penalizes sites with too many ads above the fold. '

Check here.

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