Did you know Satoshi initially implemented a review system in #Bitcoin.
This was meant to work with the market-place.
Code for both of these was still present in the 1st versions of Bitcoin, but not used.
Links:
- This version also contains additional comments by Jemery Rubin which helps a lot with understanding what the code does: https://github.com/JeremyRubin/satoshis-version/blob/master/src/main.cpp#L1953
- 2008 version where code presented was not commented out: https://github.com/0xMagnuz/Bitcoin-v0.1/blob/master/nov08/main.cpp#L1239