Does Google+ affect on SERP's?

Google Plus is Social Networking Site. It will not affect directly but If you post quality is quite good and your post will +1 by relevant users then google will consider it on organic news and quality post. 

Google has started looking into social networks and shared content as a means of improving SERP rankings from 2010. However, popular content from Google plus, Twitter and Facebook mostly influences real-time results (as opposed to normal search engine results). 

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