Linked-In may have figured out a way to induce people to pay for the perfectly adequate free service.
“See who has viewed your profile”
If that doesn’t appeal to one’s paranoid vanity, what else would? I know a “General Manager” at Thomson, and someone at Solon Management Consulting (probably Hubertus von Wulffen in Munich), and two Lenovo colleagues took a look. But the other 15?
That will cost me $20 a month. No thanks.