MSPeconomist - I'm not trying to pump JustFly, I'm about 75% sure they're not legitimate, but they do book some tickets and I'd like to hear the serious opinions; looks like they pass some consolidator's fares to the public with zero commission - how?

As of other posts: they all from new posters , they're all formatted unlike mine and yours (you've got to have better eye than me, I don't want to post details to educate the spammer), most of them are even about the same sub-topic