Phants' guide to making money.
- Use the auction house. Unless it's crap (white / grey items), chances are it will earn you a lot more money at the AH than it will at a vendor. I typically quest until I am full up and then boogey to the AH to sell my stacks of leather / ore / bars / green & blue items. It's a rare day that I don't log in to a mailbox full of gold, let me tell you.
- Recipes are worth big bucks - take them to the AH. If it's high enough (150+ of one skill or another) you'll likely earn a handful of gold for it.
- Whoring skinnable creeps a level or two below you (no more than say 5 or 6, depending on your own level) nets you XP and you (if you are a skinner, 'natch) get double the effective drop thanks to your ability to skin. Stacks of leather go for decent silver and you get a good whack out of soft patches of fur etc.
- Stay way the hell away from enchanting. This is a very expensive habit
There's more but wifey is calling.