Mining billionaire Gina Rinehart’s dramatic decision on the weekend to pull out of her $15m sponsorship of netball – following public stands taken by the national netball team about her – has already led to some of the major sponsors of sport in Australia to re-evaluate their involvement, Diary has learnt. Comments sections of newspapers around the country quickly lit up with overwhelming support among readers for the mining billionaire’s walkout, after the story was first broken online by Sky News host and Courier Mail columnist Peter Gleeson around midday on Saturday.