This website offers very convenient air tickets booking service. It is quick and accurate.
Yes, I once booked there. They give the immediate confirm information and flight information to both your mobile phone and e-mail. You can conveniently pay by credit card, so the whole transaction only takes a couple of minutes. They also provide e-tickets, meaning you don't need to go to any office to pick an air ticket. You go to the airport directly and check in with your ID card.
So it has attracted more and more customers these days.
Yes, therefore they are expanding the scope of their service. For example, hotels can be booked through the same site as well.