Kayak launched its all-important TV ad campaign Sunday, Nov. 1, and Hitwise tells me that Kayak's traffic increased 3% in the first three days compared with the Sunday, Monday and Tuesday of the previous week. The first three days obviously won't tell the story of what, for Kayak, is a massive ad spend and marketing gamble. Calling those numbers "understated," Hafner adds: "The true measure of lift isn't total traffic but source of traffic (self, affiliate, paid search). You might consider that we could pull back in one channel to see the effects of another."...
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