From the article I understand the suit is by LinkedIn members whose contact book was (in their opinion) abused to send these invitation emails to non-members. On the face of it that's a reasonable claim and seems they should prevail.

But also: How about the recipients -- who are getting repeated unsolicited commercial emails? How does this activity not violate CAN-SPAM? Shouldn't LinkedIn be subject to fines?

Edit: Although I don't terribly mind the downvote, especially if it was accidental -- I did read the whole article and had a genuine question.