Okay "ax to grind" is a little strong. Lets say a true believer that NCSoft is up to no good. Sort of like guests and callers on Coast to Coast AM who truly believe in aliens, ghosts, angels, the Mayan Doomsday, etc. and is looking for an audience who shares in their beliefs, or who are at least open to the possibility.
You've (general you, from the POV of the investigating journalist) heard rumors, stories from a friend of a friend or on the DL from some low level official or employee or ex-employee about a potential investigation, wrong doings, etc. Not enough proof to break a story on but enough to lead you to believe that something is up but you're at a dead end. How do you proceed? Well you put it out there through groups who may be sympathetic to your misgivings and see if any of them heard something new. The worst case you generate a low level buzz that something may be up and then just maybe a new lead will emerge.
Or you could believe that what "Joe" has is an open secret there, that it's SOP for such companies in Korea and that the local agencies simply turn a blind eye in the name of the national economy and he is now looking for someone to start an outside investigation that would shed more light on it.
But if you believe that 38 of the 39 analysts, or even just the 13 who has NCSoft as a Buy are all on the take, that's a little too cynical for me. It's too easy for me to believe our current feelings about NCSoft will color our judgement when to comes to accepting such rumors and accusations at face value.