Why aren't you on LinkedIn?

If you are happily employed, you should be on LinkedIn. If you are looking for a job, you should be on LinkedIn. If you are considering a career change, you should be on LinkedIn. Get the picture? I will write more about why I, as a recruiter and someone who has personally experienced a layoff, think you should be in the LinkedIn bandwagon. But for now, Guy Kawasaki does a great job in his blog about the 10 Ways to Use LinkedIn