This would also work amazingly with https://beliapp.com which is a tool for - only - sharing restaurant reviews with your contacts to serve as a personal graph of trust.

Or you could also implement your own on-site equivalent of it, if people are sharing their reviews anyway.

It's also excellent for vlogger content, if you want to get the word out, although influencers aren't historically known for tenacious attribution and credit in their content. :)