The problem that exists with the FA, probably more than with most civilian employers, is people trying to score points off each other and stabbing people in the back.
In a civilian workplace office politics is generally a bit softer, I.e. People are more likely to suck up to the boss and laugh at his jokes etc.
The same opportunities don't exist within refereeing so the best way to get one up on other referees would be too make them look bad/get them in trouble so they don't get the good appointments which would enhance their standing within the FA/CFA/Academy etc.
Of course, you don't necessarily need to do anything wrong as such, if your face doesn't fit, or someone takes a dislike to you then you might just not get good appointments, or, always get teams and/or oberservers which mark poorly.
Of course, for most refereeing will never be more than a "hobby" of sorts, and unless you aspire to get on the national list(?) or select group 1 or 2 most of the above probably wouldn't affect you too much anyway.
The best advice is what DB gave, don't post anything you wouldn't say to someone's face, or that you wouldn't want to explain to your grandma.