> For the complete documentation index, see [llms.txt](https://docs.rara.social/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rara.social/protocol-features/optional-curation-incentives.md).

# Optional Curation Incentives

## Free Reactions vs. Paid Reactions

The RARA protocol's **React** function can be called with or without sending value (MATIC).

* Free Reactions: build social graph; get like tokens
* Paid Reactions: (features of Free) + reward creators & owners. Invest in virality.