Pros
Decent option if you are a recent college grad and fit into one of the stereotypical archetypes - pretty 20-something yuppie HR girl from Lincoln Park, pretty 20-something hipster marketing girl from Wicker Park, 20-something gamer geek in development, 30-something overgrown hipster in sales, etc.
Cons
I think I will just pile on to what everybody else is saying about the place. It's all true. The creepy pseudo-religious values stuff, the cult-like following, the 80s-style groupthink, the wannabe Apple vibe that clearly fails when you compare Apple's glassdoor score. People aren't exaggerating. It really is that weird here. Either you find your calling here with people who look, think and act just like you, or you lose your mind and leave after a year. I will just add this. You know you're in the wrong place when your boss criticizes you for standing and using the bathroom stall instead of the urinal. It's apparently anti-social? The day that my bathroom preferences become my boss's business is the day it's time to update my resume!