This document discusses various online platforms and how they enabled new forms of sharing knowledge and media. It notes that before certain years, such as 1999, specific jobs like managers were less common, but after those years with the rise of blogs, those jobs increased. Similarly, it discusses the growth of wikis, video sharing, microblogging, open teaching platforms, and social networks in enabling new opportunities for sharing. The overall message encourages finding ways to share one's knowledge and skills with others.
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