Stars speak out against buying fans
18 March 2013 Last updated at 05:58 GMT
On a recent tour in the UK, the singer Ne-Yo signed a British singer/songwriter, Sonna Rele to his Universal Motown Records label, after discovering her on YouTube.
Ne-Yo says being active on social networking platforms is important, but having high numbers isn't an issue for him when he's talent searching.
He's also signed singer/songwriter Conor Maynard, who says having a strong social media presence helped his career.