http://iatefl.britishcouncil.org/2010/sessions/2010-04-09/web-20-tools-make-difference-russell-stannard
From the page: "Web 2.0 tools are everywhere and many teachers are confused by the choice. www.teachertrainingvideos.com has become a major source of training for web 2.0
and in this talk I will hightlight the most effective tools for language teaching based on feedback from over 10,000 regular users of his site."