A few years ago you might quite rightly have wondered why you should bother posting a profile on LinkedIn because nothing ever happened. Launched in 2003, it took a while for LinkedIn to really get going. In the first quarter of 2011, it finally hit the significant milestone of over 100 million registered users. But four years later, that figure’s more than tripled. Given that one of these millions could be your next client, the question is no longer whether you should have a profile on LinkedIn, but whether you can afford not to.