Background checks

Since spammers are frequently kicked off the network, they are constantly trying to create new accounts. Many spammers are able to make even a few hours profitable for them and can cause many days of damage to reputation of the services they abused. As a result, many ISPs and web -email providers use CAPTCHAs on new accounts and try to verify the credit cards are not stolen before accepting new customers, check the Spamhaus Project ROKSO list and do other background checks.