Pros
Amazing place to work staffed with a group of people that is as diverse as you can get. I have never worked with a smarter group of people who are mostly all pulling in the same direction. The product is the best on the market and the great news is the market is finally taking notice of this. Management is uniquely well acquainted with the product, which is something you only get with a company whose original founders are still running things The office is a great place with all the typical Silicon Valley perks - open environment, amazing kitchen and a very social atmosphere happening within and between all the departments in the organization. Management is approachable and genuinely concerned with what is happening both front and center as well as in the background. In fact, I think sometimes they take too much to heart and quite often do not act as soon as they should with certain "problem children" in an effort to give them one more chance at success.
Cons
Just like anyplace else, there are great days and some not so great days. As an "up and coming" company, all the facets of the jewel are not as polished as they would be in a more established organization, but this should be considered part of the charm as it is one of the warts. Late stage start-up on the edge of profitability, you have to take the good with the bad but I do feel the former greatly outweighs the latter. A lot of other reviews complain about the turnover in some of the management roles, but I don't see it as being any higher than any other company in a similar stage in its development, which can only be described as a "work in progress".