Does social media increase the performance of procurement professionals?

How does social media increase our performance as procurement professionals? I am trying to find out how social media use for work can increase performance via increased networking capabilities and learning. In addition - assuming that it does increase performance - how can we increase the usage of social media for work? What people to hire - Does it depend on their personality or social-media self efficacy? Please help me to find out in the study of Maastricht University, it takes only 8 minutes: bit.ly/1LqF9hz Thank you all!