I'd just like to reiterate that mining is indeed a gold mine (pun intended)! I got my first epic flying mount on my shaman by finishing off my quests in Netherstorm, BEM, SMV and mining... alot.
On this character (my mage) I've tried playing the AH, but I lack the patience and understanding in order to make it a very profitable undertaking.
However, I am really looking forward to farming those trees in Skettis when I get 375 herbing.
