A great tip was posted on OSXDaily.com this week detailing how to add a login & lock screen message in OS X.

The process involves going into your system preferences followed by security & privacy and typing in a message you would like displayed whenever your Mac’s profile is locked.

“Having a message on your lock screen is a great loss prevention and general anti-theft measure, since anyone who gets the Mac into their hands later will see the message and if they have a conscience, will hopefully call the number you set on the screen. This could also help if you ever accidentally misplaced a Mac laptop…”

See the original article (along with tons of great other tips & info) here – http://osxdaily.com/2011/07/28/login-and-lock-screen-message-in-mac-os-x-lion/