http://bits.blogs.nytimes.com/2011/03/01/skype-opens-a-conference-call-service/?src=me&ref=technology The New York Times of 11.03.02 announced that Skype, the Internet audio and video conversation that allows ordinary telephone calls as well, will offer a multi-user business (and classroom) conferencing service by Q4 2011. The cost for this conferencing service was not disclosed. Skype already allows 3 people to conference on a Skype call, like US telephone "2nd caller" service which is audio only conferencing. The new conferencing service will allow 10s or 100s of people to have a video conference and share files on the Internet.