In your overall well written article there is one misstatement. You wrote “On both farecompare and farecast and some other similar sites, including Kayak, Sidestep and Vayama, you don’t book travel services directly. To actually buy a ticket, you’re sent to the airlines’ own sites or to ones like Expedia, Orbitz and Travelocity.”

In fact, Vayama.com, similar to online agencies such as Expedia, Orbitz, and Travelocity and unlike Kayak and Sidestep, does provide direct booking on their site and is authorized by the airlines to issue their tickets. One major difference between Vayama and sites such as Expedia is that Vayama specializes in international travel.

Rgds