>UPS is also full of holes. No verifications whatsoever.

I've had one of my UPS account numbers used to purchase some labels for someone else (I have no idea who). No way to report this to UPS since I can no longer get in touch with my account rep (who was great, until he disappeared).

Same. One of my UPS accounts would up with about $300 of shipping charges for things that were very clearly not to or from me. Impossible to get ahold of anyone at UPS to discuss/dispute this. Just wound up creating a new account.