> I really wish there were an anonymous but vetted "yelp" type of site for people/firms who do bad business. So much business is done in bad faith and the people on the losing end rarely have the ability to warn others of their experience without killing their own reputation.

If you credibly report your experience, they will know who did it, anonymous or not.

"The Funded" was an attempt to do this for VCs a decade ago. But it was astroturfed in practice.