LinkedIn is the biggest professional online platform with over 875 million users. Recruiters use it to headhunt skilled, often already employed, individuals.
As a job seeker, you need to be careful when sharing things online and in interviews. One controversial discussion on Facebook or a poor comment made about an ex-boss could jeopardize your chance of employment.
A lot of us are on social media. We use it for various reasons, whether it be to keep up with family updates or social trends.