Currently a victim receives a mail from a "friend". Upon clicking the link, the victims address book is uploaded and all the addresses in the victims address book now in turn receive an email as if from the victim. Rinse and repeat.
Motivation for reporting:
Personal experience of two close associates leading to severe privacy issues.
Read more References: http://www.mywot.com/en/forum/29488-skillpages-com-addressbook-spamming