Consider reselling "live chat" (live support) subscription services to your customers. Only a few lines of HTML needed on customer sites to show operator "online/offline" images (which can be customized). Operator console and chat 100% web-based, and can be configured so your domain name appears in the URL bar. Entirely white-label, and no minimum resell price. Your customers can manage their own chats (via your customized operator log-in page) or you can manage their chats for them. Find out more at: http://www.gotlivechat.com/reseller-whitelabel.asp