Here is a link to a VoiceThread I created: Boston Massacre
I can see how this could be a useful tool for discussing a political cartoon or other image in social studies. I think students would be more engaged using this tool and be more careful in what they post as comments knowing that others will see it.
Here is a link to an Edmodo Account I experimented with. Edmodo for Vergult
I have not actually used this for my classes this year, but would love to set up all the assignments for the next unit I teach in here to see how it goes.
I have used TodaysMeet several times over the past two years to have a discussion on a novel. I also created a Flipchart presentation for using TodaysMeet for the Technology Blitz last summer. I love this tool because it helps me evaluate what everyone contributes AND everyone must contribute.