Search engines work by following links. Google's crawlers move from page to page across the web, indexing content as they go. The more links pointing to your website from other sites, the easier it is for Google to find you — and the more it trusts that your content is worth ranking.
This is the foundation of link building: earning links from other websites that point back to yours.
Why do backlinks matter?
Google treats links like votes of confidence. If a reputable website links to yours, it's a signal that your content is credible and worth referencing. A single link from a high-authority site can carry more weight than dozens of links from obscure or low-quality sources.
It's quality over quantity. A handful of genuine, relevant backlinks will do far more for your search rankings than hundreds of spammy links from link farms.
What makes a good backlink?
- Relevance: A link from a site in your industry or region carries more weight than one from an unrelated site.
- Authority: Links from established, trusted websites are worth more than links from new or low-traffic sites.
- Context: A link embedded naturally within relevant content is more valuable than a bare URL in a footer.
- Anchor text: Descriptive anchor text ("web design Dunedin") is more useful to Google than generic text ("click here").
How to earn quality backlinks
- Local business directories: Yellow Pages, Neighbourly, your local Chamber of Commerce, industry associations.
- Supplier and partner websites: Ask businesses you work with to link to you.
- Content worth linking to: Write genuinely useful articles that other sites might reference.
- Press and media: Reach out to local media when you do something newsworthy.
- Testimonials: Offer to write a testimonial for a supplier — many will publish it with a link back.
What to avoid
Buying links or participating in link schemes are against Google's guidelines. If caught, your site can be penalised. It's not worth the risk.