http://www.hsinjurylaw.com/blog/myspace-facebook-and-other-social-utilities-can-jeopordize-your-case.cfm.
For accident injury victim who have decided to pursue damages through a personal injury claim, before you update your status on Facebook or send out a tweet about how great of a day you're having, stop and think about the ramifications. Anything you post on the internet is free to be used in court and many insurance company defense lawyers routinely scour the internet to find incriminating and comprising information about you in order to reduce or deny your damages claim. Do not make this mistake. If you are pursuing damages through an injury claim, do not let social media kill your case. Take a break from the social networks during this period.