If you are not using Linked In as a networking tool, you're missing a key piece. I suppose if you never plan on doing a job search and don't need to make contacts for sales, you can afford to ignore it. In today's world of job insecurity however, it should be one of your top networking tools.
As for Linked In directly getting someone employment, it is one of many tools that should be used as part of a networking strategy. This will make a job search more successful rather than relying on this one single tool.
Lew Sauder, Consulting 101: 101 Tips For Success in Consulting (www.Consulting101Book.com)