Ars Technica reports: "Four plaintiffs filed a class-action suit in US district court in San Jose on Friday claiming that LinkedIn used its member's identities without consent and broke into their third party e-mail accounts to send promotional e-mails to the members' contact lists."
It sounds like this is "upload your address book" functionality and that the plaintiffs allege that what happens next is poorly disclosed. I'm not quite sure what to make of this, but it would be fair to say that I'm not a big fan of "upload your address book" as a list building strategy. I believe that even got Twitter blacklisted by Spamhaus back in 2010.
Here's my take on it, and here's John Levine's take. I really like John's breakdown of the clickwrap license issue and detail on how the parties included email addresses in filings, leaving it to the judge to point out that this was totally unnecessary.