Do you back up data?

"IRREPLACEABLE DOCUMENTS"?

http://lasvegas.craigslist.org/sys/1428657397.html

"To the person or anyone that knows the person that burglarized an
attorney's office downtown Friday October 16: If it is money you need,
I would be more than happy to pay to get my equipment back, or a
reward to know where it is. There are IRREPLACEABLE DOCUMENTS on the
hard drives-you can respond or anonymize through here, or contact
crimestoppers and leave information as to where the items can be found
without leaving your name."