Three Ways to Build Links in the Age of Google Penguin
Biznology
AUGUST 6, 2012
Whether you are trying to game the system or not, you are subject to these penalties if you merely appear to be engaging in link buying or swapping. In the days before Penguin, we used to discredit links between pages within the same domain. According to SEOmoz, ibm.com has a domain authority of 100 on a scale of 1 to 100.
Let's personalize your content