-There are no internal job postings. If you are not a favorite employee, or relative of management, you won't get promoted, regardless of merit.
-They underpay. and then if they issue a bonus, they make you feel like they're doing you a favor, and the bonus still doesn't bring your salary up to market value.
-If you have a bully boss / are targeted, you are screwed, no matter how much evidence you present to your boss's boss.
I warn people to never work there.