This is a spam IP blocker. It is free. It marks any new comment as spam automatically when commenter's IP exists in at least one of '.zen.spamhaus.org' & '.bl.spamcop.net'. Plugin is based on public DNSBL class. Official page of DNSBL class on PHPClasses.org
תוסף זה זמין להורדה ולשימוש דרך שברשותך.