It has been a while since the first report of spam appearing on the LinkedIn social/professional network. It seems that the spammers have started doing it again.

Now, the targets are premium personal accounts, that are accepting InMail messages for free. How are they finding us? By joining a LinkedIn group.

Unfortunately, I wasn't able to report them, because I couldn't find any functionality regarding this option.

As a workaround you might want to disable free InMail messages and also not accept invitations from unknown people.

Maybe LinkedIn should use Recaptcha and Akismet for filtering (robots and spam).