Its a fun way to Gank that seems to be "Exploiting in game mechanics"
So here it is.
The quest
Rig Wars.
"You need to speak to Nogg in Orgrimmar and accept the quest. After you accept it, a goblin to the right of you will have a quest. He asks you to speak to Scooty in Booty Bay. YOU MUST RECEIVE THIS QUEST. After you speak to Scooty he gives you the Goblin Transponder. Walk onto the platform and it'll bring you to Gnomeregan instantly. Rig Wars is sharable, but if you receive it you cannot obtain the Goblin Transponder (you haven't been told to speak to Scooty)."
The "Portal" Will teleport you from Booty Bay To Gnomer Free of all those pesky bruisers
booty_Bay.wmv - FileFront.com
About 1:41 long video of how this works
Stream - Ganking in Booty Bay!