Pros
Good technology and vision. Excellent access to execs. On the other hand, this means lots of exposure, too. You get to work with some Incredibly bright people, and you'll learn a lot about all aspects of the business.
Cons
Overweight with senior management, perhaps "too many cooks" is an apt statement here. They're constantly meddling in product planning and decisions that would be best left to the people they hired to actually manage the products. Incredibly political organization. Poor morale, with employees living in fear. Lack of innovation. So process-laden that even the smallest decisions require a PowerPoint presentation and approval from execs. Rife with long, unproductive meetings with no real agenda, where everyone is on laptops and no real decisions get made. Not a very fun place to work. Little opportunity for advancement or career growth here. Great values, no culture.