One of the most popular aspects of any MMOG is the trade-skill system. Almost all MMOGs have professions and trade skills that players can skill up to help create a robust, fully independent player-based economy. This type of game play adds atmosphere, immersion and robustness to the world that would otherwise not exist. In World of Warcraft, there are numerous full and secondary professions, all with their own unique advantages and benefits. A player may only select from two full professions and any number of secondary professions.

Some profession combinations make sense, as they compliment each other quite nicely: Alchemy and Herbalist, Mining and Blacksmith and Skinning and Leatherworking. Others can be combined with virtually any other and still be complimentary, like Tailoring and Engineering. With so many different combinations it can be difficult to know which is the right ones to pick for your character. Secondary professions are extremely useful as well; cooking allows you to make wow gold dupe special foods that give you temporary buffs, first aid is useful for post-combat healing and in large raids and fishing is an excellent source of rare ingredients for special items and potions. All professions take time to level up as well, requiring a player to spend hours roaming through the wilderness collecting ore, herbs or killing foes for cloth pieces and rare ingredient drops.