There is a quest in dustwallow marsh called Corrosion Prevention that can be obtained as early as lvl 35 according to wowhead (thottbot was down). The quest gives you an item called an ooze buster. The point of the quest is to stand near a power core fragment and while its channeling on you, you use the ooze buster on nearby oozes which range from lvl 38 to 41, most closer to 41. Well typically you do this and the mob dies, you get no xp and can't loot it. Well the trick is simple, just tag the ooze first, then use the ooze buster, the mob dies, and you get xp and get to loot it. Simple as that. You can still do this even after getting the 10 oozes you need for the quest which makes this an easy way to get xp and some loot. Just don't turn the quest in until your completely done grinding on them.
I was playing my moonkin and found this out because I would hit them with moonfire to pull them over to me, then use the ooze buster, when I didn't use moonfire, or hit them with something I couldn't loot them and got no xp.
The only posts I found even mentioning this quest was:
http://www.mmowned.com/forums/wow-ex...ch-faster.html
and
http://www.mmowned.com/forums/wow-ex...revention.html
and those only state a way to complete the quest fast, which is not what my post is about.