Gathering nodes need to be fixed. Herbalism and mining give small amounts of experience as you level, mostly rewarding you for going out of your way to gather nodes. A change a while back makes them scale naturally with your skill level, so that you can mine or herb anything, anywhere, just getting varying amounts of usable fragments or whole items depending on your skill.
Selling gold for cash was, for a long time, against the game’s rules. But that didn’t stop large, sophisticated operations from springing up to take advantage of the opportunity to make real-world cash. The outfits that sold gold to players started out by paying foreign workers very low wages to endlessly grind the game, but they later started procuring their gold through quicker and more disruptive methods.
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Another problem is that gold isn’t a finite resource; the game is constantly creating more of it. Gold is created every time someone completes a quest, kills an enemy or sells trash to a vendor. Some gold is siphoned back out of the game economy by repair bills, flight paths and a “tax” on auction house sales. Occasionally, a lot of gold is destroyed when someone buys a pricey vanity mount from a vendor. But gold is created quicker than it is destroyed, and it becomes less valuable as it becomes less scarce.
Before anyone asks - yes there are archived copies of old addon versions both on our github repository and on several of the addon sites we use, and these will continue to be available after Cataclysm comes out, so you'll be able to get those old files if you really want them. I'm not going to bother making these more easily accessible unless you give me a very good reason. "I'm on a private server and I need them since we didn't upgrade to Cataclysm" is a BAD reason - and it's illegal.
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Auto looting a mob will increase leveling speed for the expansion. to enable it = Esc, Interface, Controls, Enable Auto Loot. I'm including this because sometimes the simple things are missed. I, sadly, went 3/4 of the way through WoD not knowing that hitting the space bar for my mission tables is much MUCH faster than waiting it out. (i never claimed to be smart OKAY) =P
The WoW token is very simple: You pay Blizzard $20 for a token, and then you can sell the token on the in-game auction house. A player with gold can buy a token and redeem it for a month of WoW subscription time or for $15 of Battle.net balance, which is like a gift card credit that can be redeemed in WoW or other Blizzard games such as Hearthstone and Overwatch. You get their gold; they get your cash, or at least most of it.