The recruit a friend XP buff is fantastic. I only got to play about 45 minutes yesterday, but I got from 47 to 48. I should be finishing up Tanaris soon. This weekend Im going to see if I can pay my buddy a large amount of gold to run me thru Mauradon, BRD, and Scholomance. That should get me a large way towards level 60. Once I get to 60, I am going to start instance grinding with my druid.