LinkedIn, its a good network to manage your personal profile and professional brand. If you have a profile on Facebook you are good, if you have a good LinkedIn profile you are standing alone infront of recruiters.
You can create professional profiles to get hired through LinkedIn, if you running your own company you can create awesome LinkedIn company pages to connect with your clients.
There are a lot of reasons behind why you should be active on LinkedIn like while using LinkedIn you can organize professional relationships, gather and display recommendations, get found infront of recruiters easily, can create inbound leads etc.
This Infographic gives you a closer look over LinkedIn as a potential market.
Infographic Credit – Degreequery.com