Responsibility + Growth = Freedom. We strive for a bullshit-free environment. If that word offends you then you'll probably want to work elsewhere. In our culture we value straight-talking, and personal accountability, regardless of hierarchy. You think the boss made a crap joke - don't laugh. You think she came up with an idea you can top? Throw it out there.
The more you take responsibility for your role within the team, the more you demonstrate Excellence at that role, the more you'll earn the Freedom to provide leadership and direction. Be awesome, lead awesome.