I know that people here on HN love to dump on LinkedIn. That said, for some industries, it is the primary way to connect with headhunters and future employers. For me, I don't use any of the social aspect. I only post my CV details and wait for headhunters to contact me directly. It works well.

Are there any women (in highly developed countries) under 40 who aren't on some form of social media? I never met any. I think it would be more difficult than men for social reasons.