Just got a call from this number a few minutes ago. Googling the number reveals that it (supposedly) originates from the Belfair, WA area. Caller doesn't leave a message. If you call the number back, you immediately get a machine that says (paraphrased): "Hi, this is Jule from Reward Redemption. We're calling you because you have visited one of our affiliate websites and in appreciation have a rebate card for you. Press 1 to claim your rebate card, or press 2 to be placed on our do-no-call list". This call occurred within less than half an hour of my purchasing Angry Birds on my iPhone, so I don't know if my phone is giving out its number to these third parties, or if it's just a coincidence.