Someone I know gave them my email. I dont know if it was even voluntary or through a worm. SInce then, I am getting e-mails from this company and other companies "linkedin" with them. I never authorized the use of my e-mail account and there is no way to unsubscribe from them. There is coincidently no contact information available for them anywhere on their site. Any company that does business this way is evil! Stay away from Linkedin.