I got the Davis Law Group's September 2009 newsletter in my email and took a look. Christopher Davis tells about a client who had been injured in a car accident. There was evidence about the young man's injuries and the likelihood that his back would give him trouble from time to time for years to come. The defense, though, found pictures and videos on his Facebook and Myspace pages showing him snowboarding. And that led to a lower settlement, because of how those images would play with the jury. Even if the plaintiff had considerable pain over long stretches and always would, just a few carefree minutes on the slopes would make it look like the accident hadn't had much impact. And that's why Davis says that he always cautions his clients to be careful what they post.
Graphic from Washington State Department of Licensing.