Linking domains are critical in the game of ranking. That seems to be all we hear about. Linking domains, linking domains, linking domains. So what exactly are linking domains, how do you get them and why are they so important to SEO and SEM professionals relative to gaining site rankings? You will find many differing opinions on the subject, but at the end of the day, in today’s new approach to internet marketing, they are CENTRAL to ranking objectives. So let’s begin the discussion by understanding the definition of linking domains and inbound links.