, Other work These sites share something in common: we can earn more money if we build a group. Therefore, after registration it is essential to find our personal referral link or banner, which we can immediately download and send out in email to friends (but spamming is forbidden and might result in the deletion of the registration. We can also place the banners and links on our web page, blog etc. Usually only one registration is accepted from the same IP address.  Surf sites These sites are different from PTC sites and primarily offer internet marketing work, so-called affiliate programs. There are some sites that advertise PTC sites as well. Such pages can be found on the welcome page, and below.