What is an Authority Site

An authority site is a site that has achieved a measure of quality, perceived knowledge, and size to be deemed authoritative. Authority sites command a huge quantity of inbound links.

Size seems to be a prerequisite to achieve authority site status. Inbound links are also key especially inbound links from other authority sites. Finally, make sure to maintain focus on your niche and subject matter to better define your site theme.

The content you write must be compelling. This is the best way to get link love by establishing credibility with readers who will in turn spread the word and link to your site.

Authority sites in Google SERP's have multiple line listings with multiple links as shown below.