In my website, whenever I publish an article, I post that article with its corresponding image to Facebook and Google Plus.
Is it duplicate content and penalty happens?
And when someone searches the title of the article, which article does Google show? One in my website or one in my G+ account?
The same question happens for images. When someone searches the title of the article in Google Image, which image is shown in the SERP? One in my website or one in my G+ account? (I know images in Facebook aren't indexed.)