Dan Costa comments:
Facebook’s notable announcements this week range from a holistic vision of a seamless, semantically-enabled Web of human relationships, to a simple “Like” button, which will soon be omnipresent on the Internet. The moves are ambitious, giving even fast-moving rivals like Twitter reason to worry. Still, the simple fact that gets lost in the rush towards ubiquitous social connectivity is that Facebook users still don’t know what they are sharing, with whom, or why it matters. In short: Facebook remains a privacy minefield.
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