Meta descriptions matter because they're your sales pitch in search results. Google shows them under your title tag about 60-70% of the time, and users scan them to decide whether your page answers their question. A well-written description can double your CTR compared to leaving it blank or letting Google auto-generate one from random page text. The mechanics are straightforward. Google doesn't use meta descriptions as a ranking signal, but CTR is a behavioral signal that can indirectly boost rankings over time. If searchers consistently pick your result over competitors at position 4, Google notices. We've seen pages climb 2-3 positions within weeks purely from meta description rewrites that improved CTR. Effective meta descriptions follow a pattern. Keep them 140-155 characters to avoid truncation on mobile. Include your primary keyword naturally since Google bolds matching terms, making your result more eye-catching. Add a specific benefit or number when possible. For Ottawa businesses, mentioning location often helps local CTR. Common mistakes kill performance. Generic descriptions like "Learn more about our services" waste the opportunity. Keyword stuffing makes you look spammy. Duplicate descriptions across pages means Google ignores them and generates its own. We audit client sites and typically find 40-60% of pages either missing descriptions or using templates. The reality is Google rewrites meta descriptions roughly 40% of the time anyway, pulling contextual snippets based on the specific query. That's fine. Your job is to provide a strong default for your primary target keyword. For transactional pages like service pages or product categories, the meta description often determines whether someone clicks or scrolls past. At Ottawa SEO Inc., we A/B test meta descriptions on high-traffic pages using Search Console data. A 5% CTR improvement on a page getting 10,000 impressions monthly means 500 extra visitors annually, at zero additional ad cost. That's why we write them for every indexed page, even if Google sometimes ignores them.