An exploit (from the verb to exploit, in the meaning of using something to one’s own advantage.
If everyone has a the ability to do it it not a exploit, it a bug on arena nets part. And people who are quick about jumping on banning other players, need to relax. Players are just being players it what people do in mmo’s. LOL at the damaging to the games economy. I read in another post that basically says that with the diminishing return for doing multiple dungeons you are not make any gold and with all the blues and maybe greens you get you leave with a extra 5 tokens and about 10s, not really effecting economy one bit.