LinkedIn, the site which refers to itself as, "the world's largest professional network with more than 80 million members worldwide," has this week launched a service to teach users how to 'brand' themselves better online. With millions of potential employees profiling themselves online and consequently thousands of recruiters wanting to have a sneak peak at their potential employees, it is easy to see where the demand for this service has arisen from. Employing the branding experts from companies such as Saatchi & Saatchi and the BBC, LinkedIn are arguing, "Your personal brand has never been so important. In a competitive…