And then followed up with a post pointing out that this "feature" is actually a security risk.
Siri responds to your query by displaying the owner’s contact info, even on a locked home screen...
When scrolling through Twitter today I came across this tweet from Mark Gurman of 9to5:
That moment when an iPhone security flaw is spun into being a tool for good samaritans. Absolutely insane. Tweet Link
This is a security concern no doubt, as Siri offers up your whole contact card on a silver platter to anyone who asks for it. If done correctly this could be used, as the original tip posted by OSXDaily suggested, in returning a lost phone to it's rightful owner.
While the phone is locked it could just display the name that is on the "me card" and display a message stating to contact the phone's owner using an alternative number than that of the cell phone if one has been entered in the contact. If the owner has any 'Related Names' entered into the phone these could also be listed in a generic format such as Spouse, Mother and so on.