Complaint / Review
Stamps.com
Impossible to cancel, automatic rebilling... Stamps.com stamps.com

Don't do it. Sounds like a great idea. But you can't cancel once you've signed on. The only way to cancel is to cancel by phone (although you can sign up for new service on the web), due to "new security concerns". We called five or six times trying to cancel and were on the phone 45 to 55 minutes on hold until we finally hung up. However if you call in as a new customer you get through in about two minutes. Huh.