It started with fundamentals. Yup, that's right that same very word your basketball coach used to bellow repeatedly into your ears as you did line sprints in Junior High School. Even WoW has fundamentals and when you learn the very core of how they operate, the possibilities are endless. Brad did just that and by doing so he was able to build up a collection of gold beyond what anyone could have imagined.
Blizzard didn't see it coming they have a gold cap in their game set at 214,748 gold 36 silver, and 48 copper. The number may seem completely random, but it's really just a limitation in the coding and a sign that the game's very creators didn't expect one player to ever amass that much wealth.
If you're still scratching your head in disbelief, you can view the video proving Brad's accomplishment here: