Links are not equal. The factors that matter most:

  • Relevance: a link from a roofing supplier to a roofer counts more than one from a recipe blog.
  • Source reputation: a newspaper, trade association or city website carries more trust than a site launched last month.
  • Placement: a link inside an article body outweighs a sitewide footer link.
  • Descriptive anchor text that is not stuffed with keywords.
  • Diversity: ten links from ten different domains beat ten links from one domain.

Google's spam policies target links built to manipulate rankings: buying or selling links that pass ranking credit, excessive link exchanges, links created by automated programs, keyword-rich links in widely distributed widgets or footers, low-quality directories and forum comments with optimized links.

Paid links are allowed when they carry rel="sponsored" or rel="nofollow". They can still send referral traffic and visibility, they just do not pass ranking signals.

The best sources are often already in your network: manufacturers that list certified dealers or installers, trade associations, your local chamber of commerce, youth teams or events you sponsor, local news coverage and partners you co-publish a guide with. Genuinely useful assets such as original survey data, a calculator or a pricing guide attract links without outreach.

The Links report in Google Search Console shows which sites link to you and which pages get linked most. Review it every quarter, watch for valuable links that disappear after a partner redesigns its site, and when you delete or rename a page that has backlinks, 301-redirect it to the closest equivalent page so the value is not lost.