The four speakers presenting via Second Life ® were located in Poland, Seattle, Denmark and Los Angeles. The technology allowed for interactive discussion, so speakers in Toronto faced questions from Second Life ® participants all around the world, while Second Life ® speakers had their Powerpoint presentations shown on a screen in Toronto (operated by their avatars in Second Life ® and simultaneously by the organisers in Toronto), and faced questions from Toronto and other Second Life ® participants. The size of the turnout in Second Life ® demonstrated the effectiveness of virtual conferencing; many more people were able to attend the conference than would have been feasible otherwise.