I'm surprised I'm in the "LinkedIn one-percent". I don't share all that much on the site, or many other social networks for that matter. 95% of my sharing is done on this blog. I've always been reluctant to share very actively in too many places; I prefer to share in one place that I can be really proud of.
That said, I have built up an amazing network of colleagues, friends, partners, clients and mentors that I can easily speak to through LinkedIn's platform. And this email is a good reminder of how much of an asset that network can be.