Interesting. I haven't even thought to look for reviews on Facebook. I have found nextdoor.com useful for finding service professionals.
For local restaurants, eh, I just visit them once. What I'm looking for in a restaurant seems to vary too much from what folks who leave reviews are looking for. e.g, some folks really care about how long it takes their meal to arrive or the quality of the service. To me, the quality and consistency of the meal is most important, so I'll forgive a slow kitchen or an occasional bad server or server having a bad day. Also, as they say, there's no accounting for some people's taste. :-)
