Yes. A couple of years ago my iPad was stolen while I was shopping at a store. Had stupidly set it down for a while, and it disappeared. It was password protected so others couldn't use it. Soon after when I had access to the Internet I used "Find my iPhone" to locate it, and the service showed it moving around the city and settling down at a hotel. I sent messages to it telling the users to return it (messages appear on the otherwise locked screen with a tone sound). Advised the police with this information in my police report. Then fearing for my personal data, I issued remote commands to wipe all my data. Note that you lose the GPS tracking when remotely wiping data (I had given up on getting it back). It must have spooked the thieves, because the iPad was dropped off at the Lost & Found at the local transit department (although a couple weeks transpired). When you do a wipe, the message appearing on the screen is to connect to iTunes. That possibly scared the thieves. When I connected, iTunes did a full restore of my data.
Interesting, thanks!