What is the best way to earn gold for a level 80?
Solution 1:
There are a few ways to earn gold.
Follow the zerg in Straits of Devastation. Players have found a way to do dynamic events in a manner results in a never ending chain. Each event rewards a good amount of exp, gold and karma. Pop a karma booster for more karma. This is by far the best way of earning gold and karma. The downside is that it is a very boring method.
Caudecus' Manor. This level 40 dungeon is truly the easiest dungeon to grind. A good group of players can clear this dungeon in 15minutes. Each completion rewards 13 silver as well as plenty of level dependent loot to salvage. This is a great way to farm gold and crafting mats like gossamer scraps and orichulam ores. The downside is that it does not reward karma. It can also turn into quite a grind.
Citadel of Flames. This dungeon's reward is not as good as Caudecus' Manner. However, I noticed it tends to drop quite a nice amount of loot bags which give crafting mats like bones and vials of blood. Selling those on the trading post can result in quite a bit of profit. One nice upside is that is is quite challenging which makes it a nice alternative to the easy yet boring Caudecus' Manor.
WvWvW. There are plenty of dynamic events in here. Capturing points all give good rewards. The biggest upside to WvWvW is that it has a huge fun factor.
Sept 17th Edit:
The latest patch reduced the rewards for running dungeons constantly. This would reduce the farming effectiveness of Caudecus' Manor and Citadel of Flames in story mode. It looks like the current fastest way to earn gold/karma would be to fight in WvWvW when your server is evenly matched with the opponent.