Pros
MC Strategies (MCS, R.I.P. 1986-2005) in Atlanta was a great, wonderful home-grown company that thrived prior to being acquired by Elsevier (ELS). The corporate environment was relaxed yet productive. Employees didn't mind putting in extra hours and efforts over and beyond what was required because the then-president, Don Galimore, was a great person to work for. You wanted to do your best and it was never a chore.
Cons
Since Elsevier bought out MCS in 2005, everything has gone downhill from there. Certainly every company's goal is to make money, but ELS does it at the expense of employee morale, to the point that more often than not, employees that stayed became discontent and migrated towards bringing home a paycheck rather than truly enjoying working their hardest for the good of the company. It's counter-productive to browbeat employees into submission who are already more than capable and willing to do the job asked of them. The corporate structure is a joke. Now only the brown-nosers who throw their team members under the bus are the ones getting promoted, and upper management is more inclined to dismiss those who really do the best work and aren't into kissing up.