Initial proposal of Sponsorship layers

programs/sponsors/sponsors.md

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+# Sponsors
+
+JSON Schema uses [OpenCollective](https://opencollective.com/json-schema) to gather money. This money is used to cover project expenses in a transparent way ([See the OpenCollective documentation](https://opencollective.com/how-it-works)), and your donation will help to sustain and grow the Project.
+
+Please go to our [OpenCollective page](https://opencollective.com/json-schema) to become a backer or a sponsor.
+
+## Benefits of being a backer
+
+Backers donate $5 per month to the project, and get the following benefits:
+
+- Visibility on the GitHub main project page in the "sponsors" section.
+
+## Benefits of being a bronze sponsor
+
+Bronze sponsors donate $100 per month to the project, and get the following benefits:
+
+- Visibility on the front page of [https://json-schema.org](https://json-schema.org) in the "sponsors" section (about 110,000 views/month on November, 2023).
+- Visibility on the GitHub main project page in the "sponsors" section.
+
+## Benefits of being a silver sponsor
+
+There is a limit to 10 silver sponsors.
+
+Silver sponsors donate $500 per month to the project, and get the following benefits:
+
+- Same benefits as bronze sponsors (visibility on main page).
+- "Thank you" tweet from [@jsonschema](https://twitter.com/jsonschema).
+- "Thank you" post in Linkedin from [@jsonschema](https://www.linkedin.com/company/jsonschema).
+
+## Benefits of being a gold sponsor
+
+There is a limit to 3 gold sponsors.
+
+Gold sponsors donate $1,000 per month to the project, and get the following benefits:
+
+- Same benefits as silver sponsors (visibility on main page, and thank you posts).
+- Company logos on all [https://json-schema.org](https://json-schema.org) page footers.
+
+## What will the project do with the money?
+
+As you can read in [the OpenCollective documentation](https://docs.opencollective.com), the way your money will be used will be public and totally transparent.
+
+Anyone can file an expense. If the expense makes sense for the development of the community, it will be "merged" in the ledger of our open collective by the core contributors and the person who filed the expense will be reimbursed.
+
+Money will first be used to cover direct project costs:
+
+- Infrastructure and hosting
+- New features development
+- Legal protection
+
+Then, money will be used to:
+
+- Pay for project goodies
+- Mentoring programs
+
+References:
+- [JHipster - Sponsors](https://json-schema.org/sponsors/)
+- [MUI Code - Sponsors and Backers](https://mui.com/material-ui/discover-more/backers/)