Pros
Relaxed atmosphere, how much so depends on the manager. If you work hard and is talented you will do fine. They do hire alot of recent grads so if you have little to no experience, this is the place to be. To the people who complain. Seriously the only person you can blame is yourself. If the pay is too low, who's fault is that? Yours. You signed the agreement, you signed you agreed to it. If you are unhappy with it, you shouldn't have signed it. Saying that you signed it because you can't find a better offer, is childish and a sign of lack of professionalism. No matter what job you work at. You can always say, there is better.
Cons
Benefits isn't very great. Sometimes you will get a project with a nasty client but gotta stick through it.