Ticketmaster was involved in a class action lawsuit. It has recently been settled, and if you made purchases between 1999-2013, you may be eligible for free and/or discounted tickets at many Live Nation (Ticketmaster's parent company) venues. If you have made any purchases in the specified time frame, log into your account via desktop (the mobile app won't show this information), and click on "Active Vouchers" in the listings on the left. This
article from BuzzFeed shows a bit more.
I had received an email about this from Ticketmaster, too. They are currently experiencing "technical difficulties", so the site isn't loading completely for me. I was a frequent purchaser for a while, so I'm hoping I have something waiting for me!
Also, I'm not sure if this is just for the US or if it includes overseas purchases as well.
EDIT: I got 3 free tickets, 3 discounted tickets, and 2 UPS discounts for expedited shipping. :D
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