1) A website is not, under the law, generally responsible for posts of authors/contributors/reviewers who are not their employees, agentys, etc.--that is, websites like Yelp have been given legal immunity for liability due to what their posters post, which in turn means that you can't compel them to take it down. (Congress did this to encourage a free and open internet.)2) Persons' names are public information, which any person may post or otherwise publicize/publish freely, unless that person signed some agreement to not disclose names.3) If the review is making a material (important) misrepresenation (lie) about any staff, those staff members may be able to sue the reviewer personally (not the website) for defamation.4) If the reviewer is posting threats about the staff or trying to incite harm agains them, that may be a crime and should be reported to the police.