This is common sense, and requires you to be kinda lame.
I can't see blizzard taking action due to this.
Anyways: if you're having exams or for other reasons can't actively farm on your own, you should give this a go. Requires a relatively high-pop realm!
1. Go to the golden lotus daily q hub and inv a friend of you (just ask him/her to stay in the group for a min).
2. Swap to master looting, and set it to epic.
3. Start inviting people who're doing the quests and fly keep refreshing your group as they finish their quests.
4. Profit! Only you will be able to loot skyshards, and you've been afk while others were farming.
-This is very unpopular. People will hate you for it
-People seldom notice loot settings until something fancy drops.
-Upon a skyshard dropping, trust me xD, you'll notice in groupchat (no need to constantly loot stuff).