Consider adding hosted live chat to the portfolio of services you offer to your hosting clients. No servers required, operator accounts all managed via a web-based control panel, and the live chat script and console are white/private label.
Your domain name (chat.yourhostingname.com) can display in the chat window as well as operator console. A great way to resell recurring live chat services to clients. Learn more about our hosted white label live chat: http://www.gotlivechat.com/reseller-whitelabel.asp