This chain of sites; adultfriendfinder. Christianfriendfinder, seniorfriendfinder, gayfriendfinder and about 30 more, all part of the Friendfinder network out of San Jose, CA is BLACKLISTED for all the malware on it. Keyloggers, spyware, trojans that collect credit card, social security, bank account Nos. And such. It has over 3,000 "affiliates', spammers and worse who have contracts to kick back part of their proceeds to the company. It has been sued in federal court for the amount of spam and spammers it hosts. That is why they are able to offer 'free' memberships -- because their members are pigeons for these spammers and phishers to pluck.
Sign up onto one of the friendfinder sites at your own risk.