In a very informative on its own right article, "Examining E-Discovery Chain of Custody", Christy Burke brings an interested quote:
"Tom O'Connor, a litigation support consultant and director of the Legal Electronic Document Institute in Seattle, says that the No. 1 request for e-discovery that he's seeing in Washington state is for divorce cases, not criminal ones. Investigators confiscate and search laptops and home computers for proof of adulterous affairs, hidden financial assets and the like -- a far cry from the notorious bloody glove in the O.J. case."
I remember a divorce lawyer, a friend of mine, telling me that "my clients only want to discover the other party's checkbook", only a year ago. It seems this has changed lot.