LinkedIn is the social network of choice for hooking up with people and companies professionally; in fact, one survey found that 86 per cent of companies that use social networks to recruit talent do so with LinkedIn. Just being on LinkedIn and participating in relevant groups has helped open up freelancing opportunities for me, and the service offers a great many features you may or may not know about that can help support your own networking, freelancing or job search needs. Here’s a look at how to use LinkedIn’s many tools to increase your “hirability”.