Pros
Quite simply: The work is interesting (or at least looks interesting on your resume), your career advancement is up to you, which is a huge plus IF you have an entrepreneurial spirit, if not, you'll get no where. The pay is good, hours are flexible and dress is pretty casual (some wear shorts, but that is frowned on, jeans get no comment). The company is large and you can meet many people from diverse backgrounds that can help you outside of worklife (part time realtors for instance)
Cons
Entrepreneurial spirit is a must. If you're not willing to sell yourself both to peers, and management there isn't much chance for good advancement. There are few mentors, and few willing to really help out younger employees. The company is making an effort, but follow through is lacking. New, exciting initiatives are launched, and then forgotten.