As you can see in my post, I just told people that they were immature for posting noobish stuffs in it. It's useless, if he's a hacker, he'll just laugh behind his screen... anyway, sorry for infiltrating.
Heh it seems that it's possible to learn it too.
Even veb gave us some hints. Just try to google hacking vBulletin, or something like that, to get to learn AgentJ's powers.