Isle of Quel'Danas: Special mention. At lvl 70 you can start doing the dailies here. Despite not being able to fly, the quest density is VERY high. I recommend hitting this every reset if you spend more than 24 hours REAL time(not /played)in the 70-80 level range. In fact, if you're doing a monk and only logging in once each day anyway, IQD WILL be your best exp/h for this level range. If you're going to hit the island more than once, it's probably worthwhile to change your hearth to the Shrine in MoP at this point to facilitate faster travel back and forth.
The most recent run I did on my hunter, I never set foot in Ghostlands, nor did I need to fully complete Dustwallow Marsh. There are a LOT of quest lines in each of these zones that might not be available unless you progress and complete story-line quests in order. Northern Barrens and Andorhal are especially bad in this regard, but many zones you can easily miss out on a lot of quests if you don't do a vital quest. So make sure you keep an eye on the minimap for quest ! indicators.
Madmortem - Alliance Madmortem - Horde Magtheridon - Alliance Magtheridon - Horde Mal Ganis - Alliance Mal Ganis - Horde Malfurion - Alliance Malfurion - Horde Malygos - Alliance Malygos - Horde Mannoroth - Alliance Mannoroth - Horde Marécage de Zangar - All... Marécage de Zangar - Horde Mazrigos - Alliance Mazrigos - Horde Medivh - Alliance Medivh - Horde Minahonda - Alliance Minahonda - Horde Moonglade - Alliance Moonglade - Horde Mug'thol - Alliance Mug'thol - Horde Malorne - Alliance Malorne - Horde
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