It’s rare to run across someone that does not have a Facebook or Twitter account. While few teens these days exist without a Facebook account, Facebook has been especially popular among adult users, allowing the account holder to share family stories, photographs, and to reconnect with long lost classmates.
Facebook has also begun to have some interesting interplay with divorce and custody litigation. See this recent story about how a Facebook account was used by divorcing parties in a high conflict divorce case: http://www.theglobeandmail.com/life/the-hot-button/the-most-bizarre-use-of-facebook-in-a-divorce-case-ever/article2054594/
I observed only last week a hearing in one of our Illinois courts that involved an interesting (and probably not uncommon) use of Facebook. The Wife was on the witness stand testifying to her relationship, or lack thereof, with a gentleman whom the Husband claims is a paramour that has had contact with their couple’s minor child. Wife denied any real relationship, and denied that the alleged paramour had ever been in their home.