Pros
Free food (cereal, trail mix, bananas..), fun atmosphere, educated group of people, transparent office, Apple computers.
Cons
Long work hours. My team supervisor would always tell me that they expect new hires to work 10 hour days for the first year or so while they gain clients. The problem is that most of the big-name clients are already taken (and the remaining clients don't really have a use for the product or can't afford it). There is no room for growth and it's very difficult to switch departments. Their biggest department is the sales team and if that isn't a good fit for you, good luck trying to interview for another position. Additionally, the base salary is super low - $30k. Not enough to live off of while you gain clientele. The upper management is trying to be like Google and most of them are extremely full of themselves.