Prenuptial agreements, and postnuptial agreements, are used to determine financial aspects of a marriage or divorce.  But you can also add lifestyle clauses to deal with non-financial matters as well.  The Weinberger Law Group suggests a social media clause.

A social media prenup clause would provide that neither party would put any negative, disparaging, embarrassing, insulting or unflattering content on Facebook, Twitter or other social media.  You might agree not to post photos of the children or anything about family finances.  Some couples agree they will not post anything about each other on social media in the event of divorce.

Something to think about in the wired world we live in.