The News Corp phone-hacking crisis has already claimed several scalps and, by the middle of last week, also put paid to News Corp's bid for BSkyB.

Meltwater Buzz analyses sentiment and volume around the deepening crisis, beginning before the revelation that the News of the World had hacked into murdered schoolgirl Milly Dowler's phone.

Unsurprisingly, sentiment plunged as volume rose - culminating in News Corp's dramatic decision to shelve the bid on 13 July. Later that day, the Holmes Report revealed that News International's management and standards committee had called in Edelman to provide PR advice.