Even with my portfolio of only a few hundred domain names, every month I debate which to renew, which to let expire, which to sell and how best to sell them. I find myself going back and forth on which criteria are important in analyzing the portfolio, and worrying that I'm going to drop a domain name of value. In today’s interview, we find out how an investor with 22,000 domain names manages his portfolio, including what process, metrics and tools he uses. This practical information is useful for domain investors at all levels.