In their simplest form, backlinks are simply links from one website to another. But in terms of SEO, they’re powerful. Googles uses backlinks as a ranking signal because the link implies that the content has value, is trustworthy and is worth sharing. Local link-building should be your number two priority after onsite optimization. Earning backlinks from high-authority websites helps position your site as an authority as well. These high authority links work like a “vote of trust” from one site to another. Quality trumps quantity.