ZUJI is a joint venture of 16 of the best airlines in Asia-Pacific: All Nippon Airways, Cathay Pacific Airways, China Airlines, EVA Airways, Garuda Indonesia, Hong Kong Dragon Airlines, Japan Airlines, Japan Air System, Malaysia Airlines, Northwest Airlines, Philippine Airlines, Qantas Airways, Royal Brunei Airlines, SilkAir, Singapore Airlines, United Airlines, and the world's most popular online travel service, Travelocity.com.
not only that, but up to now and the coming years probably too, nobody and certainly not an electronic thing can beat a normal real life Asian travel agent. He/she will likely be able to offer lower fares too.
My bet is that SIN will be the first place to gradually switch to webbased bookings.
Another thing is the safety of payment, as fraud with CrCards is rife in this region.