Per my other post, money does matter.
I've never had any luck profiting from crafting, but then again, I'm Skin/LW. I have had luck flipping items on the AH. Dailies, gathering, and solo dungeon crawls are a reliable way to make money, but they'll never make you Tree-rich. Raiding is money-losing (repairs), not money-making. Heroics and PvP are probably money-neutral. I hope no one buys money from farmers, although (per my other post), any of us who dabble on the AH are no doubt indirectly benefiting from them.