Southwest Airlines remains quite different in many ways from most of its domestic competitors, but in some ways it's becoming more like them. On Friday, Southwest raised all of its fares by $5 one-way, something the other carriers have also been doing lately because of higher fuel costs. Even more telling is Southwest's total revamp of its frequent-flier program to give more reward to business travelers and others who opt to pay the highest fares. Points will now be awarded based on fares paid rather than simply by segments flown. Read a good detailed piece about the changes to the Rapid Rewards program here.