LinkedIn describe their mission as being “simple: connect the world’s professionals to make them more productive and successful. When you join LinkedIn, you get access to people, jobs, news, updates, and insights that help you be great at what you do.”

LinkedIn is the professional person’s social media network. It is a great way to connect with other professionals in both your industry and in industries connected to your business.

Through LinkedIn groups you can network, engage with and learn from other professionals. You can brand yourself and show your expertise by starting your own group and inviting people to join and contribute to the discussion.

As a social media network, this one can be particularly useful for recruitment agencies and companies looking to headhunt new talent for their vacant jobs.

LinkedIn is free to join but you can also upgrade to the premium option that is a monthly or yearly fee and allows you to do things like message other LinkedIn members. If your service is B2B or you rely on new professional connections, then LinkedIn is a definite necessity for you and your business.