Yelp! User Faces Lawsuit

According to the San Francisco Chronicle, an area Yelp! user is facing a lawsuit over his negative review.

He criticized a chiropractor over his billing practices calling him dishonest and alluding to insurance fraud. The chiropractor insisted that he was practicing standard medical billing procedures, claims he attempted to educate the Yelp! user and asked him to reconsider or change his review. The Yelp! user instead posted a second review accusing the chiropractor of manipulating his reviewers into giving him positive reviews.

Of course we all know that this lawsuit shouldn't exist because chiropractics shouldn't exist, but that's just one man's opinion.

I think the chiropractor faces a tough battle on this one, but at least he's attacking the principal Yelp! problem head-on: what liability does an individual have when he or she writes (or continues to have posted) VERIFIABLY FALSE information that can be shown to have a PROVABLY NEGATIVE effect on a business.

Thoughts?