BigMarker is a free web conferencing service that I tried last year. This week some nice enhancements were added to BigMarker. The major change to BigMarker is the redesign of the web conference rooms to make them simpler and more intuitive to use. To make listening to conferences easier, you no longer have to have a headset to use BigMarker and you can now listen to conferences (but not start them) on your Android device.
Applications for Education
Big Marker could be a great tool for conducting online tutoring sessions and lessons. Students working on collaborative projects could use Big Marker to brainstorm and plan for completion of their projects. As a professional development resource Big Marker could be useful for facilitating workshops online.