...
Irving Wladawsky-Berger's Blog on virtual collaboration and spaces: http://irvingwb.com/
\[Irving is the former head of research at IBM, and now a visiting professor at MIT Engineering Systems Division\] Wiki Markup
New York Times columnist Andy Rivkin on lecturing in real life and SL simultaneously: http://dotearth.blogs.nytimes.com/2008/03/13/second-life-and-real-life/index.html
...
For people with older/slower computers, the Dazzle Second Life viewer may allow you to use SL effectively: http://wiki.secondlife.com/wiki/Dazzle
US academic conference on Web 2.0 debates value of blogs and SL for higher education collaboration and research: http://www.insidehighered.com/news/2008/05/09/blogs