Big Marker is a service that offers a free option for hosting online conferences. The service allows you to web conference (screen sharing is currently not available) in a manner similar to using the multiple callers option in Skype. Big Marker has a native recording option that you can use to capture your conference. Today, I received an email from BigMarker in which they announced that you can now embed those recordings directly into your blog or website.
Applications for Education
If you're looking for an alternative to Skype to use to bring virtual speakers into your classroom, give Big Marker a try. The native recording option could be great for recording that virtual visit and posting it on your blog for students to watch whenever they like