The big question that economists these days are asking their selves is if it is possible to produce a profitable site based on hosting 'user submitted video's'. The amounts, that for a site as Grouper were paid, are more based on the numbers of users that can be reached and less on the potential yields of the site itself. So happens that News Corp paid 580 million dollars to obtain MySpace.com, although the social-networking-site at that moment had 12 million visitors per month. At the time of the take-over there was criticism about the amount that was paid, but this month Google announced to pay 900 million dollars the coming four years to put search and advertising-services on MySpace. YouTube has approximately 16 million visitors per month.