If you’re trying to learn SEO one of the most common things you’ll hear people talk about is link building. Google uses the number of external links as a barometer of how important and popular a website is.
Not all inbound links are created equal though, some can do more harm than good! To make sure the links you’re building are going to work take a look at this infographic from Pole Position Marketing which shows you how to measure the effectiveness of a link.
SEO Basics: 11 Ways to Measure the Ranking Power of a Backlink