It's not like Google has never failed at any of its ventures, but to me it seems like it might be a tough competitor to everyone in this field, since a decent amount of traffic does come through search results. On the other hand, I think a majority of users come in directly, either through WOM or advertising or previous use.
So, what is HN's thoughts on the situation for Kayak? Would it be a wrong move to accept a job there? The engineers seem smart, the work is interesting, the culture is sane and easygoing. What's the worst that could happen?