How does this help you network? I've never been one for social networks, but I've gotten a few requests to be added to my non-existent Linkedin account. It makes me think that I'm missing out on something.

It's for professional networking--job searching, talent searching, or getting info on industry-related topics.

Use it, love it.
Great for networking Phone Post 3.0

Is it used to cold contact someone who works for a company you want to be at? Phone Post 3.0