Yesterday I flew United Airlines from Boston to Spokane, Washington via Denver. The flight itself was quite enjoyable. The check-in process was not.Of course, United's check-in facilities in Boston were crowded, even at 6:45 in the morning. I spent close to half an hour waiting in line, and saw one check-in person even go on break and return fifteen minutes later, when there were still lots of people waiting to be processed. By the time my bags were...