Backlinks are incoming links from external websites to yours. When Site A links to Site B, Site B receives a backlink. Search engines treat these as endorsements: if reputable sites link to you, algorithms interpret your content as trustworthy and relevant, which directly influences where you rank. Not all backlinks carry equal weight. A link from a high-authority domain in your niche—say, a Canadian news outlet linking to a local Ottawa business—passes more ranking power than a link from a low-traffic directory. Google's algorithm evaluates the linking page's authority, relevance to your topic, the anchor text used, and whether the link is followed or nofollowed. Editorial links earned naturally are worth far more than paid placements or footer spam. Backlinks also drive referral traffic. A single mention on a popular blog or news site can send hundreds of qualified visitors who already trust the source. We've seen clients gain sustained traffic bumps from one solid placement in a niche publication, even when the domain authority wasn't sky-high. Quality beats quantity every time. Ten links from relevant, authoritative sites outperform a hundred from sketchy directories. Google's spam filters have become aggressive—manipulative link schemes can trigger manual penalties that tank your visibility overnight. At Ottawa SEO, we focus on earning links through genuinely useful content: original research, case studies, tools, or localized resources that other sites want to reference. We also monitor competitors' backlink profiles to identify realistic targets, like industry associations, local chambers, or journalists covering our clients' sectors. The practical takeaway: backlinks remain one of the top three ranking factors. You can't ignore them, but chasing volume or paying for links is a fast track to trouble. Build something worth citing, then strategically pitch it to the right people.