This is the way I think about Linkedin: It’s not really about networking. Most fruitful networking take place on other places. It’s mostly a way for recruiters to find people. The modern equivalent of a Rolodex. Which can be good for people who might want to get in touch with a recruiter that has something to offer them. (Some people don’t want do be contacted by recruiters and for those people Linkedin probably doesn’t have so much to offer.)