Wow gold is wrapped in a fantasy world
One major difference is in the interface -- obviously, wow gold is wrapped in a fantasy world, so that in between all of the socializing, you're also fighting the Scourge or the Burning Crusade. Facebook has games, but it doesn't have that overarching narrative. WoW also rewards group teamwork and coordination, while Facebook leaves collaboration to its own rewards. And of course the cost is another big difference: WoW is still a subscription game, while Facebook pays in other ways. But the amount of similarities between the two are pretty fascinating. And comparing the two, as Gamasutra does, really makes you think about just what interactivity means, and how two apparently very different types of interactive media aren't that far apart after all.
If you have a Facebook profile, can use MS Word, or have bought something on eBay, you understand the essential language of interaction, which is at the heart of every video game. You may not want to bother figuring out a hardcore shooter, but that doesn't mean you're not an active patron of the medium in which video games are contained.
Virtual interaction is at the heart of the modern media, the answer to the looming question of what comes next. For thousands of years games mimicked the forms of interaction, but they required two present parties to reproduce the interactivity.