In August, the New York State Bar Association issued an ethics opinion telling lawyers they should no longer use the “specialties” section on the professional networking site LinkedIn. The only thing is, LinkedIn.com had removed its “specialties” section months earlier.

The episode is but one piece of evidence that legal ethics guidelines across the country are failing to keep up technological advances. This and similar opinions issued elsewhere make it increasingly difficult for large firms to navigate ethical strictures involving marketing practices that cross state lines.