Hey guys, long time lurker, first time poster. Well, yesterday I was on my 19 twink advertising my guild and someone whispered me asking if I would like to purchase some BiS 19 rogue boots then invited me before discussing a price. After him asking for some absurd price he left the group and it prompted me to tank ZG because he had already downed 1 boss. Doing it for the lolz I decided to queue as tank (as my twink is a prot pal after all) and to my amazement it actually popped and I was grouped with 85's in ZG, now, I couldn't enter because I was only 19, but it was definately ZG (as shown when it popped and it's loading screen).
Now, I see potential with this for new/undergeared 85's that are in need of good gear. I'm not completely sure how to re-create this situation but I still see it as useful and an exploit. Be creative. Maybe have a 2-3 man group and kill first boss then just AFK to get others to leave then inv a third person? I'm not sure, once again, be creative and goodluck!