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estão em inglês… mas é bem claro e didático:
Social Media in plain English: here Podcasting in plain English: here Social bookmarking in plain English: here Blogs in plain English: here Social Networking in plain English: here
Social Media in plain English: here
Podcasting in plain English: here
Social bookmarking in plain English: here
Blogs in plain English: here
Social Networking in plain English: here