The link between Jobs/Wozniak and Zuckerberg is interesting. I would certainly consider Zuckerberg a hacker, but not nearly in the same realm as Jobs and Wozniak.

Facebook is a product of the modern day web environment. Its longevity has yet to be seen. If 2015 rolls around and its a public company that is still innovating then thats one thing, but if it becomes more of a cluttered site in its pursuit to be more like -insert recently popular site here (currently twitter)- then thats another.