The semantic web is relatively new. It is a major research initiative of the world wide web consortium since 2004. According to the description of wikipedia, by encouraging the inclusion of semantic content in web pages, the semantic web aims at converting the current web of unstructured documents into a "web of data".It builds on the W3C's resource description framework[1].
One of the benefit of semantic web is that it describes data in a structured way. Then it is convenient for database operation. Furthermore, with some imagination, we can form an impression that the semantic web and social networks together can enable the World Wide Web to active its full potential. And we can imagine that by the combination of the two, data ( and people ) different networks can interact and result into new knowledge. That is a great power.
And I tried a related website: http://arnetminer.org
Arnetminer aims to provide comprehensive search and mining services for researcher social networks. The timeline of Arnetminer starts from 2006. There is a social graph of Mark Zuckerberg. The information of this Mark Zuckerberg is not complete, so I can not confirm whether he is the founder of Facebook. If this Mark Zuckerberg is the founder of Facebook, it is interesting of his registration and low impaction here.
Reference:
[1]^ a b c "W3C Semantic Web Activity. World Wide Web Consortium (W3C). November 7, 2011. Retrieved November 26, 2011.
[2]http://en.wikipedia.org/wiki/Semantic_Web
[3]http://arnetminer.org
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