About Walled Gardens and Social Networks
"Unlike the global internet, which enables virtually the entire world to connect, social networks have created very large, localised communities with far more limited international interaction."
Peter, have you installed the Diigo toolbar? If you haven't, do it. With the Diigo toolbar you can make comments, highlight, bookmark sites, add sticky notes, etc.
I am a German (DaF) and English (EFL) teacher at a secondary school in Portugal. I love technology but I'm also keen on literature, photography and everything that is aesthetically interesting and holds in it an aesthetic pleasure.