> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.platelunchcollective.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Comment Signal

> A comment signal is the engagement and content generated in the comments section of a social media post — including questions, answers, additional informatio...

*Core concept* · *Social Search*

## Definition

A comment signal is the engagement and content generated in the comments section of a social media post — including questions, answers, additional information, and user reactions. AI systems indexing social platforms increasingly treat comment content as part of the overall document signal for a piece of content.

## Why It Matters for AI Search

Comments extend the informational surface area of a social post. A video that answers a question in its content, and whose comment section contains additional specific answers, use cases, and named entities, creates a richer retrieval document than the video alone. For brands managing social content, treating the comment section as a content layer — answering questions thoroughly, adding context, naming relevant entities — extends the AI [citability](https://www.platelunchcollective.com/services/citation-ready-content) of each post beyond its original transcript.

## Related Terms

<CardGroup cols={2}>
  <Card title="Social retrieval surface" href="/ai-search-glossary/social-retrieval-surface" />

  <Card title="Entity mention" href="/ai-search-glossary/entity-mention" />

  <Card title="Platform-native SEO" href="/ai-search-glossary/platform-native-seo" />

  <Card title="Social corpus" href="/ai-search-glossary/social-corpus" />

  <Card title="Engagement signal" href="/ai-search-glossary/engagement-signal" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[Social Search Optimization](https://www.platelunchcollective.com/services/social-search-optimization)