Hello, Christian and everybody! You wrote: "basically there are two possibilities: a marxist notion of class connects the concept to exploitation, a weberian notion to life-situation, life-style, etc." What about a third view, simply descriptive of the core of the entire (human) social life? That of Veblen's distinction between the class of those engaged in daily bread-earning activities on one hand, and on the other the class of those involved (or aspiring to be) in "conspicuous consumption". I guess both FB and MS people would then belong to the second same class, as mere sub-classes! François Nsenga Montréal, Canada -------------------------------------------------------------------- mail2web.com What can On Demand Business Solutions do for you? http://link.mail2web.com/Business/SharePoint