Their are a few different ways. the most common is using a profession sell your skills to others for cash. Another way is to farm for items, I myself normally farm primal fires in shadowmoon vallys making 20-30 gold per primal and over 100 gold per hour.
Another way which some of my guildies use, is using the skill enchanting run the instance stratholme in Easter plauguelands and disenchant all drops and seel on the Auction house
Dailes doing some a day you can have bout 250 gold or ever more a day
Gold.
No, you can not buy my world of warcraft account, i have put too much time and money into it.
The money of course.
Do auctions or grind on enemies for money
mining and herbing
$30,000
A Retail World of Warcraft Server costs money. In the USA it is $15.00 a month +Tax and you have to buy the games and get an account. Once you get a subscription and buy the games you then can Connect to a Retail World of Warcraft Server.
A lot more people play World of Warcraft than Runescape. It is a more populated website.
Don't buy gold. It ruin's the World of Warcraft economy, most of the time the money comes from exploits in the game, and it is Illegal.
Anub'Arak
You must do a lot of quests and go to Raids and Dungeons!
herb or mine and sell them on the auction house it is really easy money