Pros
Good benefits, a lot of great people, some interesting and challenging projects on the cutting edge of technology. The company provides a lot of training and free access to a lot of valuable resources for personal and professional growth for both the technologists and managers. There's a lot of opportunities to grow in the company or make a lateral shift by moving to other team or project.
Cons
eBay has heavily overloaded and complex hierarchical structure with multiple tiers of management. It might be interesting for people who want to grow in management ranks. But it's definitely not the right culture for majority of start-up folks which are acquired by eBay year over year. If you need a real-life application of Parkinson's law on bureaucracies that multiply themselves - this is a place to come and see it. Self-sustained manager cohort grows, projects could be turned down the "next day" they started, the same thing could worked on by multiple independent teams in different departments, rewards are often given to unrelated but favored managers and people in front lines in the actual teams who do the work are ignored - all of this can be found here.