The business news is littered with the corpses of social networking websites which have been eclipsed by Facebook and Twitter, and particularly the former.
Yesterday it emerged that MySpace, a social networking site which grew big and popular on music, was swallowed up by Rupert Murdoch for £372m but has since been deserted by many users, is cutting almost half of its global workforce - 500 staff.
Meanwhile, at Facebook there is trouble ahead as the Winklevoss twins - who won a multi-million settlement from founder Mark Zuckerberg after claiming a part in inventing the site - go back to court. They want the case, which led to a £42m settlement for them and their co-plaintiff Divya Narendra, to be reopened.
The quartet's original court battle inspired an Oscar-tipped movie, The Social Network.
Could there be a sequel?