Johnny Jet says that mileage runs for traveling is out now, and most people are traveling to maintain their status or reach the next travel status level.
This week's travel website Quest Organizer. You can just put in where you're going and it will tell you where you can get a free layover. They also sort by lower price. Once you decide which one you want to go with, it then searches for flights for that combination.
This week's travel app - MileHi. It's essentially social media while you're traveling. You can network and meet people while you're traveling. On iOS and Android.