My father-in-law, Boris, has driven a Philly cab for 30 years. He bought three taxi medallions—a sure bet, he thought, to secure retirement. Then Uber came. Then Lyft. Hailing a cab became as easy as pushing a cellphone button. His medallions are now worthless. He still drives but makes a fraction of his pre-Uber income. Lawyers beware: This sad story could happen to you.

The dangers of “Uberization” for routine legal tasks, from document preparation to document review to research, have been known for years. While Avvo recently closed its Avvo Legal Services, a service that provides fixed-fee, limited-scope legal services through a network of attorneys, this trend will continue. The Uberization of legal advertising, however, is a trend that gets little attention, but should get a lot more.