The Most Devious Link Campaign of SEO History

Disclaimer: This article represents my own opinion and not that of my employer, clients, or business partners. 1,792,729 I want you to try and remember that number. One million, seven hundred ninety two thousand, seven hundred and twenty nine. It is a big number, and it represents the most successful, devious link building campaign of all time. What makes it successful is quite clear. The number you are looking at right there is none other than the number of unique websites according to NerdyData that have attempted to install authorship markup with links to Google+. Now, I am careful to say attempted because many of them have installed it incorrectly, but the backlink still exists. No doubt the 4,587,474 historical root linking domains “earned” by...

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