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We've been unsuccessfully trying to get our brand's Google+ page listed in the Knowledge Graph for our brand. I believe that our markup on our website is correct. Can anyone advise on why we can't get this to pull up in the knowledge graph?

Google+ page: https://plus.google.com/+Tacticalgearcom

Knowledge graph for TacticalGear.com: https://www.google.com/search?sourceid=chrome-psyapi2&ion=1&espv=2&ie=UTF-8&q=tacticalgear.com&oq=Tac&aqs=chrome.0.69i59j0l2j69i57j0l2.2831j1j7

Thank you for your insight! Followup - how does Google know if the link was paid for?

If my website were to purchase a sponsored article on a site with a powerful domain authority that contained a do-follow link, and the link would be "domain.com/articles/new-article" ... obviously new-article would have 0 page authority, being new... is that still considered a valuable link and why or why not?

We're creating our own CDN such that instead of serving images from

http://mydomain.com/images/shoe.jpg

It will appear at all of the following subdomains:

http://cdn1.mydomain.com/images/shoe.jpg

http://cdn2.mydomain.com/images/shoe.jpg

http://cdn3.mydomain.com/images/shoe.jpg

http://cdn4.mydomain.com/images/shoe.jpg

Image tags on our pages will randomly choose any subdomain for the src. The thought was this will make page loading faster by paralellizing requests across many cookie-less domains.

How does this affect :

-Ranking of images on Google image search.

-Ranking of pages they appear on

-Domain authority (images are linked to heavily in our social media efforts, so we will 301 redirect image urls to cdn1.mydomain.com)

Should we disallow all but one CDN domain in robots.txt? Will robots.txt on an image only subdomain even be retrieved? Should we just use 1 CDN subdomain instead?