The document discusses how social media has become an important part of the hiring process. Employers are increasingly researching candidates' online profiles and presence before interviews to screen them and assess their fit for roles. Having visible, professional social media profiles on sites like LinkedIn is now viewed as essential for candidates, as many recruiters and hiring managers use these profiles to evaluate candidates and some have even hired candidates based solely on their online presence and without a traditional interview. The document warns that anything unprofessional found online through these background checks can now negatively impact candidates' employability.