SEO glossary · Updated
Social signals and SEO: does social media affect rankings?
Social signals are engagement on social media, such as likes, shares and comments. Google hasn't documented them as a ranking signal, but social activity can help SEO indirectly.
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Social signals are the likes, shares, comments and follows your content gets on social platforms. A long-running SEO question is whether Google counts them. Google's documentation of its ranking systems doesn't list social media engagement as a signal, and Google's SEO Starter Guide treats social media as a way to promote your site, not a ranking factor.
How social media helps SEO indirectly
- People who see your content may link to it from their sites.
- It can lead to more searches for your brand.
- Social profiles themselves often rank for your brand name, and AI assistants often cite well-known platforms.
- Discussion on Reddit, forums and LinkedIn can surface in search results and AI answers.
SEO vs SMO
SMO (social media optimization) means optimizing your presence on social platforms: profiles, posting, engagement and content suited to each network. SEO optimizes your website for search engines. They work together: social spreads content, search captures demand.
Platform search
| Platform | What helps people find you there |
|---|---|
| Complete profile and company page, the words people search for in your headline and about section. See LinkedIn SEO. | |
| X (Twitter) | Clear profile, consistent handle, topical posts; some posts appear in Google results |
| Genuine participation in communities; Reddit threads often appear in Google and AI answers | |
| Medium | Articles on your own topics; set the canonical to your site when republishing your own posts |
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What the free audit tests for this
- Open Graph
- Twitter Cards
- Third-party profiles
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Audit your website freeFAQ
Do social shares improve Google rankings?+
Google hasn't documented social engagement as a ranking signal. Shares can lead to links, mentions and brand searches, which do matter.
What is SEO SMO?+
SEO is optimizing your website for search engines; SMO is optimizing your social media presence. Agencies often sell them together.
Sources
- SEO Starter Guide — Google Search Central (2025-12-10)
- A guide to Google Search ranking systems — Google Search Central