CIA Psy-Ops on the Internet (tags)
See, if the "retired" spooks flame in too nasty a fashion and too constantly, it makes them look bad. The technique used is to bring people in from outside with no other purpose than to start flame wars with, and otherwise harass the critic. An analogy would be the hockey player who can't skate but is on the team to take out the talented players on the opposing team by starting brawls. A trademark of these types is that they never contribute anything of substance. Their refrain is "so and so is a... blah blah."