As I've said before, what good is a blog if you can't bitch impotently about minor inconveniences?
A few weeks ago, Mike and I were flying home from a conference, and to expedite processing at the airport, I checked both of our bags together. Later, at the gate, they repeatedly announced that they would like to check passenger's bags for free because the flight was full and space in the overhead compartment was limited. So that was annoying: I paid for a service they were later offering for free.
Back at work, while I was sorting through my receipts to prepare my reimbursement request, I discovered that when I checked the bags together, I was charged extra for the second bag. I paid them $60 unnecessarily.
So I submitted a refund request, which they have just denied.
MORAL: Don't pay to check your bags on United. They'll probably beg you to let them check them for you for free at the gate.