With yesterday's hotfixes, Blizzard has buffed the rates in which Bronze Orbs award Bronze and buffed the threads received from them, making them a viable farming alternative.
Bronze Orbs fly around every zone in Remix: Mists of Pandaria. Farming them is a relaxing experience and perfect for players who like to fly around zones. Besides being a decent source of Bronze, you will also find quite a few threads while farming.
Bronze Orbs' main location is above buildings or important relief locations like mountains.
The only downside of this method is that Orbs disappear once one player collects them, meaning it is not a good farm when the skies are crowded.
Earnings from collecting Bronze Orbs: