Pros
They have free food on Fridays. Great location in SoHo next to subway. Majority of the workforce is REALLY young, so if you are a college grad or party type, you'll have fun with the crowd.
Cons
To the point on age above, that also turns out to be a weakness as the overall maturity level is painfully low, which may be annoying if you are a bit more seasoned with experience. Not a cutting edge agency when it comes to tech. They also suffer from a symptom very common in a lot of agencies: the clique syndrome. There is a small inner circle with the senior management and their junior level minions who do their bidding, and they promote each other. There are a few really nasty, manipulative personalities and if they feel you are smarter or bring good ideas to the table and you are not a part of their clique, they will harass/treat you poorly until you leave. Their HR department is also not the most professional in the world.