Pros
I am proud to be part of one of the strongest companies in the travel industry. There are many great innovations, initiatives and new partnerships that are truely shaping the online travel world. Changes come slowely but over the years I've seen many great ideas coming true and really "revolutionizing travel industry with the power of technology" (which is Expedia's mission)
Cons
Whether you like Expedia or not (unfortunately) depends on the team you are at and most importantly who is your mananger. I've seen many very talented people giving up on Expedia just because they had no opportunities to grow, no support from their managers or simply because (quite openly) they were not the right fit from the PERSONAL point of view of the team leader. HR politics despite the size of the company are still very poor and in many cases decisions are made based on a personal opinion of a manager. Hcom and EAN have recently started addressing some of this gaps but the GMM (market management team) stays very much behind. It's a shame. As for myself I am constantly evaluating the pros of a strong business organization and cons of poor mananagement practices.