This week, the potential of the Internet to expose and disgrace when marriages fall apart came into stark relief as Tricia Walsh Smith, who is being divorced by Philip Smith, a theater executive, put a video on YouTube announcing that they never had sex, and yet she found him hoarding Viagra, pornography and condoms.

Not surprisingly, Mr. Smith’s lawyer, David Aronson, called the video “appalling” and said: “Mr. Smith is a very private person. This is obviously embarrassing.”

But in an era when more than one in 10 adult Internet users in the United States have blogs, according to the Pew Internet and American Life Project, many people are using the Web to tell their side of a marital saga. Despite the legal end of a marriage, the confessions can stretch toward eternity in a steady stream of enraged or despondent postings.

In separation, of course, one person’s truth can be another’s lie. Often the postings are furtive. But even when the ex-spouse is well aware that he or she is starring in a blog and sues to stop it, recent rulings in New York and Vermont have showed the courts reluctant to intervene.