User IP Ban form generates the appropriate .htaccess code to ban visitor(s) from your site based on their IP address. Site Referrer form generates the appropriate .htaccess code to ban visits originating from certain domains. For example, if an undesirable domain is showing up a lot in your web site referrer logs, you can ban that domain so any traffic coming from it- human or otherwise- is blocked. Disable Hotlink form generates the appropriate .htaccess code to disable hot linking of common file types from other sites, so only your own domain(s) are allowed to reference/ access them. For example, by disabling hotlinking on .gif files, any site not within the allowed list of domains will get a broken image when they try to reference a .gif file that's on your server.