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-- Accessibility and Usability
---- Will adding an overlay to my website affect organic rankings?
gerronmulder - 2:45 pm on Dec 9, 2011 (gmt 0)Thread source:: http://www.webmasterworld.com/accessibility_usability/4384542.htm
It shouldn't affect your organic rankings, though they can be seen as pop-ups, which are not allowed for Google Adwords.
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