So, what's so good about Dokeos videoconference?

I'm often faced (locally) to the question about our videoconference tool... It is true that a lot of videoconference tools have appeared recently, even in Open-Source, so we don't really have a unique marketing argument to defend it. The initial idea behind the videoconference was that, at a time where DimDim and other videoconference tool were still closed-source or didn't even exist (in mid-2006, that is), we wanted to offer a videoconference tool as a complementary tool for Dokeos, so we asked Sebastian Wagner, a German developer, to do this for us.