Just last week I noticed a couple of charges from a mom and pop restaurant hadn't posted. The total was probably only $50.

I did receive a "nearly" free flight. My inbound flight was delayed due to weather and I was automatically rebooked for the next day. However, I hustled over to the gate and made my flight home.

I was looking at my e-credits a few weeks later and noticed a fairly sizable one. I called in to ask what it was and we figured it out. I told the CSR I actually made the flight. She said, she couldn't remove it and it was mine to use. So, I used it.