The document discusses using social networks for recruitment. It introduces the concept of e-recruitment 2.0 using professional and fun social networks as well as referral-based networking. It then provides a case study of a company called xpertize.be that uses these concepts. Members of xpertize.be's network can refer job openings to their own networks and earn rewards if referrals result in hires. The case study outlines how xpertize.be works and provides key performance indicators showing its success since launch. The document concludes by discussing future trends around open social networks.