This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Use Zorbin's Ultra-Shrinker to zap any kind of giant found in Feralas into a more manageable form. Bring 10 Miniaturization Residues found on the zapped versions of these giants to Zorbin Fandazzle at the docks of the Forgotten Coast, Feralas.
Inconceivably fantastical, <name>! You've come through for me again, and for that I thank you.
While you may find this coin to be a little less than you're accustomed to, rest assured your great deeds on the field of goblindom are echoing through the halls of power in the Steamwheedle Cartel. Should you need something else to do, then by all means talk to me!