Well, from much past experience with PB, I can assure you it works. What info does it show to the server/players/host? Well for one, if it detects you hacking, it will "KICK" you and that kick and the reason are displyed on the screen for all to see. If the server is streaming to the MBL (Master ban list), that kick will go to all servers running the Auto-MBL tool from Punksbusted, and he will be prevented from joining other servers. PunkBuster now also bans hardware guid's. not just the guid from your CD. So, if you get caught by PB, it might ban yopur motherboard or your hard drive, or your graphics card lol. It woks well in many other games.