Elton John calls on social media companies like Facebook to become involved in the fight against hiv and aids. He did just that during the annual princess Diana lecture on hiv, for which the singer this year was asked. “In one fell swoop, we have two billion people reached via Facebook. Imagine that this power focuses on compassion and love, injected with real humanity,” said John. According to the 71-year-old singer can the great tech pre-eminently committed to the discussion of the disease and the stigma surrounding hiv and aids from the world.