Hey holiday trials from PSN? Let me take a stab at it since I wasn't able to win a Subway+ subscription...
Apparently, for anyone who buys and registers one of the holiday PS3 bundles this year, you receive one of these vouchers by email for one-month Playstation Plus trials. The trial time likely won't stack on a single account, so evidently you're supposed to use them on family members sharing your new console, or give it to friends.
It's too bad I bought a PS3 bundle for my in-laws only a couple months ago. I should have waited for the Black Monday deals because they were $70 cheaper...Missed out there. :-(
I'd be happy to have one of these free 30 day Playstation+ trials if anyone has one to give away? Thanks.