Throwing money into the economy makes sense if you're trying to attack goldsellers because by flooding the economy evenly with cash, you destroy their inventory of stock-in-trade cash AND reduce demand in the short term. Then you transition to a less gold-dependent gameplay model.

I'm pretty sure this was blizzard's plan when they introduced the new easy and ridiculously lucrative daily quests. They want to wreck demand for gold by providing easy non-RMT alternatives.

Goldsellers don't benefit from the daily quests because it's hard to level a character to 70, and they don't dare have 10 level 70 characters on one account because they'd lose too much if the account was deleted.