I lost one of my portable USB sticks recently. No one at my client site will admit to seeing it but I suspect someone has used it. Would be really good if there were something on the menu to show owner's information --- in the faint hope that the finder is honest.
I made a utility in the past to do just that: http://code.google.com/p/padp/downloads/list?q=Lost
Might be a good idea to roll that into the menu...
"If you're not part of the solution, you're part of the precipitate."
… don't tell anybody: There is an unofficial, unsupported fork of portableapps.com called «geek.menu» where this is included. You have choices: If you like, the owner info can appear only on computers which the usb-stick does not recognise, and you can choose that it will only show the owner info and not start the menu.