When you get to 80 play games , daily quests can definitely make you some easy gold. The best thing is that you will also earn reputation for epic items, enchants, mounts etc while you are making some gold. But are you doing the best dailies to make gold and to earn reputations for good rewards or are you really just wasting time?
Now I could just make a list of daily quests that reward the most gold. But that won't be very useful. Many quests give the same gold rewards so how will you choose which to do? Remember that you will make more gold in less time if you do dailies that are quick and easy to complete. The best dailies to do are those that will make you the most gold per hour.
Of course, there are other reasons to do dailies than just making gold. Combine earning rep for your shoulder and head enchants or some great gear and you have a great reason to do them. Shoulder enchants are earned from Sons of Hodir and head enchants from the Kirin Tor. You can also research gear rewards and work on the best dailies for factions who reward good items for your class.
Don't forget to do the fishing and cooking dailies. These are two of the best dailies for gold and faction. Both reward Kirin Tor faction for your head enchant. You can fish up some valuable items during the fishing daily and the recipes you learn by doing cooking dailies make buff foods that will sell well on the Auction House. Both of these can be found in Dalaran and you will need Grandmaster cooking or fishing to do them.
Some other interesting factions are the Oracles and the Frenzyhearts. These have some of the best dailies for quick gold and some nice items. But you can only do dailies for one or the other. To pick whether you will work for Oracles or Frenzyhearts, you must complete the quest to kill Artruis the Heartless in Sholazar Basin. When he is almost dead, you will be given the opportunity to save an Oracle prisoner or a Frenzyheart prisoner.
If you want to switch factions later, simply kill Artruis the Heartless again and save the other prisoner. There is an achievement, 'Mercenary of Sholazar', available for reaching Exalted with both Oracles and Frenzyhearts. the best dailies for gold are from the Oracles faction. They are fast and easy to do and you can get the Green Proto Drake epic flying mount which is a rare drop from the Mysterious Egg free games, available from Oracles at Revered. You can also get some trade-able non-combat pets from the egg, which can sell quite well.
