TripAdvisor has been struggling but it is a testament to its continued power as a marketing vehicle that Expedia Inc. felt compelled to participate in TripAdvisor Instant Booking even though ...

It's has to be a comeuppance for Expedia to see its offspring, TripAdvisor, turn into such a formidable frenemy. On the other hand, Expedia shareholders made plenty of money off the TripAdvisor ...