If you're going to be getting a phone upgrade in 2013, Best Buy has your number. Or rather, it wants your number. Last year's Phone Freedom promotion is back, and that means you can get a $50 gift card with a new phone purchase just for registering with your email address and phone number before February 9th at 11:59PM.
So here's the deal: hit the Best Buy promo page and sign up with your email and phone number. Once that's done, keep an eye out for the one device that makes your heart sing in 2013 and buy it from Best Buy or Best Buy Mobile (on or after February 10th). As long as you're using the phone number you registered on the promo page, you'll get a $50 gift card for doing almost nothing. There is no commitment or penalty if you don't use your upgrade by December 31, 2013 – you just don't get the gift card.
While a free $50 gift card is nothing to sneeze at, there are a few restrictions. First, you can redeem with Sprint, AT&T, or Verizon phone activations in the store. For T-Mobile devices, you'll have to activate online for some reason. The entire deal is also contingent on signing a new 2-year agreement. You can't get the free money if you're not up for a contract renewal.
Seems like a solid deal, and you can sign up even if you're unsure about buying a phone this year. That way you'll have it just in case.