Facebook has a new friend -- divorce lawyers.

When it comes time to find damaging evidence, the lawyers say social networking sites are often among the best places to look.

The American Academy of Matrimonial Lawyers says 81 percent of its members have been involved with cases using social networking evidence.

Facebook is by far the biggest source -- with users often posting pictures of themselves and the other man or woman. There also sexually suggestive pictures, or snapshots involving the use drugs or booze.

Attorney Linda Lea Viken has this advice for her clients. She says never post anything on your Facebook page you wouldn't want a judge to see.