Are the Rumors about Facebook Marketplace True?

I've been doing some research and it appears that Facebook Marketplace is not to be trusted. According to several users on Twitter, it seems that people are encountering scammers and fake listings. I personally have not used the service so I cannot completely make a judgment on it. Facebook Marketplace was put into place to directly compete with Craigslist.

If you have used Facebook Marketplace, please comment on your experience.