Looked at LinkedIn Skills. Interesting extension to Linkedin. Although it isn't really new functionality. All users could already fill in the expertise they (think they) have based on their work experience. To me this is one of the limitations of LinkedIn. Isn't it much more interesting to hear what others think of you? What expertise do they think you have? Who is the go-to person when you need someone with skill x? LinkedIn Skills basically only says: I think I'm the person you're looking for.