I "booked" 3 round trip flights online, got an email confirmation, then 6 hrs later got a call saying the airline hadn't "accepted" my booking. The guy said that too many people at the same time had been trying to book their great low fare so it "didn't work." WTF? I've been using travel websites for over 20 years and nothing like this has ever happened before. He gave me a choice of taking different flights at ridiculously early departure times, fly on different dates (not possible), or book the same flights but pay much more because the price had gone up. I demanded a refund, which they said they'd get to me in 2 business days. Never received it. Had to get my credit card company to reverse the charge. DO NOT USE SmartFares