Azshara

In Azshara, in the Highbornes,wow gold you will find a place called Shadowsong Shire. It is located on the left as you head down the road from Ashenvale to Azshara. Here, you'll find some Highborne Ghosts that range from level 44 – 47. These mobs drop mageweave constantly, pay attention to gather all of them, so you can get a ton to sell on the AH. They will also drop lots of green items and even chests now and then. Highborne Ghosts are pretty weak overall, but they are casters, so be careful when you get in range of them.

Lake of Kel'Theril

At the Lake of Kel'Theril, you will find several different ghost mobs, such as Anguished, Highborne, and Suffering etc. These mobs range from 53-55 and are pretty weak, therefore, easy to slay. They constantly drop green items and money, though not so valuable, you also can sell them for gold. Every now and again, you will get a blue drop, but very rarely.

You will also find a weekly mob of water elementals that completely takes over. While the elementals are not that bad to kill, the boss is hard. You can do it alone, but it isn’t recommended.

You can find a cave where the Cobalt Dragons live southeast from the lake. These mobs are level 56-58 elites, so it isn't wise to try this one alone, unless your level 65+.

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http://alinawow.blogcn.com/diary,33301032.shtml