Southwest Airlines offers open seating. You must still obtain a boarding pass on a first come, first served basis, but once you are allowed to board the plane, you can use any unoccupied seat. This makes boarding much quicker and there fore more efficient. They also do not serve meals once the plane has reached a cruising altitude. You are given a "bag lunch" as you board the plane. This enables them to provide you with a snack, without the stewards taking the time to serve you. Most of the flights are relatively short, so they do not allow enough time for a full meal service.
Southwest Airlines has some very creative advertising. One of the key words in the advertising is "love". They refer to