MyTicketTracker.com / ticket sales
I purchased tickets to a concert through boxoffice-tickets.com. Boxoffice-tickets.com confirmed my ticket order through e-mail and informed me that mytickettracker.com was apparently my primary "ticket seller" through which I would access and print the tickets I had purchased.
Everything initially seemed to be in order, and I was able to successfully access and print my tickets. However, when I arrived at the venue for the event and gave the venue my ticket to be scanned, I was told that my ticket had already been used by another concertgoer to enter the venue. Apparently, my ticket had also been sold to at least one other person.