I'm not sure if most of us would qualify quite yet for this "Educator Account", but the "Professional Devlopment" section in particular looks potentially helpful. Maybe somebody will find this useful later on.
Thought this was a good slide show showing some of the issues with technology in classrooms. There is a lot of info in the slides that I can relate to from my work last year as a paraprofessional.
"TogetherLearn lets you bring people, ideas, and conversation together live so you can discover a whole new world of learning."
So much potential here! Includes Khan Academy lessons, so you can discuss and mark up similar lessons to the ones we have been looking at this last week.
The only limitation - as far as I can tell after just an hour of playing with it - is that you cannot upload/create your OWN lessons (yet). So there is a ways to go to be fully functional for classroom use. Still, very cool technology that will likely improve as more people join.