When I flew Continental four years ago to go to Vegas I was treated like crap by one of the gate agents. She told me that she didn't like how I was dressed (plain blue t-shirt, no belly showing, and black slacks, not tight) in front of everyone on the gate waiting area. Some guy even came to me and told me I should not take that. I felt I had to because I was flying stand-by. It turned out she actually made me lose the first flight out and when the other agent came in for the second flight, I got on that one. I wrote a complaint letter and till this day have not heard from them.
Fast forward to 2011. Last year I was flying with my daughter who was only three months at the time to Miami. When I went to check in my bag the agent asked me where the father was, I couldn't believe it. She said I should have someone with me to help me with the bag because I had a baby with me. She seemed pretty upset and her attitude was tremendously horrible. I told her I was alone and that I needed her name please. She pushed out her name tag towards me. I wrote a complaint about this too. Have not heard from Continental. This time I was a revenue passenger.
Both times I was discriminated against. The first for my "clothes" (yeah right, it's more likely because I am Hispanic), the second was because I was a single mom. Does Continental care. No. Not even an apology. But they're a monopoly now with the merger, they'll get away with more.