The pressure to constantly produce fresh content is turning many businesses into would-be publishers. Apparel retailers offer tips on clothing fit and accessories. Outdoor outfitters provide resources about backpacking must-haves and publish articles about how to train for specific adventures. Pistachios and Tic Tacs are on Twitter. Online, silence is not an option.

Having a daily article quota may work for journalists, and even big brands, but it is unrealistic for attorneys. Attorneys should play the content marketing game,...