What I find interesting is that there's a handful of small pixel chunks on their that amount to something like "Paid" or "Reserved", so they don't have valid UR

What I find interesting is that there's a handful of small pixel chunks on their that amount to something like "Paid" or "Reserved", so they don't have valid URLs at all. Feel like those folks missed out on tons of eyeballs a decade back. Also wonder if there's any study on ongoing advertising impact on these links. For example, a number of links on their don't resolve anymore - are those domains worth anything more than a usual registar price?