Standard Tactics, LLC: How GoDaddy Profits from Expired Domains

"GoDaddy.com and other registrars that are part of The Go Daddy Group don’t use a partner to sell customers’ expired domain names. Instead it auctions them on the company’s own platform originally called The Domain Name Aftermarket (TDNAM). It’s a fairly transparent system. But when a valuable domain doesn’t sell, something not-so-transparent goes on in the background, as described in detail below."