I was a hardcore grinder in Wow man. I just left it like a year ago. My 2 greatest grinds are 2 achievements "insane in the membrane" and "Hero of shattrath", the first one took me a year and a half to complete, that's why the reward is the title "the insane" wich I used until I left the game. Lol. You can check it out.

http://us.battle.net/wow/en/characte...ement#81:15273

By the way 3 skill shards per week sounds so sweet.