Recruitment on social and professional networks has become a recurring practice for most of companies. According to a 2016 APEC (French job board specialized for managers) study, 91% of recruiters are active on these networks. They have become a veritable sourcing tools as they represent a very important source of profiles from all sectors and competencies. Moreover, they allow employers to promote their brand. Indeed, being present on these networks is an excellent way to develop the company’s attractiveness.