Hiring organisations and recruitment agencies source 'talent' from LinkedIn for vacant and new positions.  Why?  Let’s face it – LinkedIn is a pool of talent!  A hiring organisation or recruiter only needs to type in the position title, drill it down to a location and whammo – there’s the pool!  What’s more, they can see who is actively looking for new positions if the individuals have set-up their back-end of LinkedIn to show that they are available.  This information is not available on the front (public facing) page of your LinkedIn profile so your current boss won’t know you are in the job market.  If you are of interest, the hiring organisation/recruiter will contact you via LinkedIn messaging and you’ll also receive an email advising that you have been sent a message.  That is why everyone absolutely needs a LinkedIn profile.