7 Fantastic Free Social Media Tools for Teachers is an excellent resource from Mashable.
The Father of CSS Talks HTML5 is an interview with Håkon Wium Lie.
OpenStudy is a new idea that has joined up with MIT Open Courseware to create an interactive social environment for online college classes. They started small with only 3 courses – one of them Intro to Computer Science – and the response has been huge. This is a trend to watch in education, I think it’s going to be significant to educators and students.