The problems are:
* Is the review accurate
* Is the reviewer someone who has similar standards as I
* Is the review looking at aspects I rate
* Does the reviewer have a bias (good/bad)
* Was the review based on a representative sample
It's the same for job references, service reviews, product reviews. It's almost random.
As for moderation and verification, these are indeed important challenges. But with the right combination of community-driven moderation and automated systems, it's possible to create a trustworthy environment. Legal and defamation issues can be addressed through clear guidelines and by fostering a culture of constructive criticism.
Of course, blindly trusting every review isn't recommended. The key is to use these platforms as a tool, not the ultimate authority. By looking for patterns and corroborating information, tenants can make more informed decisions. It's about empowering people with information, not providing a definitive verdict.
My landlord isn't a company or a management agency, but the guy who owns the house I live in. Google and Yelp probably aren't great venues for reviewing him, except in the "infamy" sense.
In the U.S., Section 230 of the Communications Decency Act protects the operator of the website.