97% Facebook ads, ladies and gentlemen. That's where Facebook's money and influence comes from. You wanna see why Facebook is pushing into worldwide internet'n'shit? ...'cuz they're effectively at saturation everywhere that has internet. Facebook needs to spread the Internet to the developed world in order to hit their growth targets. 79% of online adults already use Facebook. I'll bet their growth curve looks pretty plateau-like. Shall we check? Mark Zuckerberg wants to wire the world so they can use Facebook. So he can sell them ads. So his stock doesn't crash. This may have the benefit of providing internet to the developing world on the backs of Facebook investors. Win-win.
To be frank, I don't give two shits about how his name will be remembered in history. Somehow, Zuckerberg, Jobs and the rest of the technowizards don't sound to me like people worth remembering in the global sense of the verb. Probably has something to do with the fact that their practices and legacy are ambigious at best. Also, when was the last time you've heard of Sergey Brin?