According to Sir Elton John, social media companies have a huge role to play in the fight against HIV and AIDS.
The 71-year-old star - who has been heavily involved in the fight against AIDS for decades - has made the plea to technology firms during his Diana, Princess of Wales Lecture on HIV at the Institut Francais in London.
He explained: "I am used to putting pressure on pharmaceutical companies. I am used to putting pressure on governments. We have had some success with both.
"The pressure now needs to be applied to the tech giants - not because I think they are bad, but because they have the capacity to do so much good."
Elton explained how his good friend, the late Princess Diana, was able to change perceptions of AIDS through her own activism.