As the recent banning of top guilds in World of Warcraft for raid finder exploiting shows, no game is completely safe from exploits. Especially the automated grouping tools seem to be vulnerable to trickery. Now it appears that there is a possible exploit with the dungeon finder, allowing lower level characters to get a Satchel of Helpful Goods. Using that exploit, they can equip themselves with otherwise unavailable blue gear for use in the lower level PvP brackets.
Several people complaining about that on the forums made the mistake of describing how the exploit works, and got their threads deleted for that. In the threads without the description, Blizzard promised a quick hotfix. But a customer service representative was then quoted as saying that while they would fix the exploit, they wouldn't remove the items in question, which caused more of an outcry.
Strange at it may appear, the lower level PvP brackets are dominated by some of the most hardcore PvP players the game has. By using the feature that stops their xp gain, they can stay in those low brackets forever. The game becomes one of extreme twinking, with the players having the best gear having an advantage. The Satchel of Helpful Goods exploit not only gives the players that used it such an advantage, but due to nature of that particular sub-game, they will now keep that advantage forever. Don't you think that it would have been better to remove that gear?