What to do with all these order "numbers"?

medz thought this was worth mentioning said
2

A lot of folks seem very cavalier about sharing their order “numbers”. My impulse is to keep it secret; keep it safe. I understand wanting to share as the order numbers are quite funny. I especially like the game of posting a google image you found by searching your order number. I’m just not so sure about actually providing the number itself.

So, the question is: What can I do with all these order numbers people are posting? I saw in a thread recently that customer support can’t/won’t really change shipping addresses after an order is placed nor will they cancel an order. So it’s not like I can email and ask to have that order re-routed or something. Maybe I could use the number to create a fake invoice or something and then use that to get a rebate from a manufacture. I don’t think these numbers are used for any shipment tracking information that I could find where someone lived. Any ideas on how I can benefit from other users’ order numbers?