New answers tagged social-networks
Google now has a share snippet preview tool to generate appropriate schema or open graph markup: https://developers.google.com/+/web/snippet/
As per my experience it won't harm your search engine ranking, but it advisable that the social icons link must be nofollow to restrict Google from passing link juice to these social links.
Placing your social media Icons at the Top or in the header can help your visitors to get connected and visible to them in first impression. But it doesn't impact ranking.
The icons itself have no value, apart from recognision for your users. A link you your SM accounts is a plus, this way SE's can link you SM and website together. This does require a healthy relation between the two, the socialmedia's need to link back to your site. Does it matter if you add it to the footer? AFAIK not, as long it's there, it's there (unless ...
As far as i know, there is no positive or negative impact of placing social icons on your website. It will help your visitors to connect with you through your social media profiles and will help you to stay connected with them too.
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