What factors would you use to measure the rareness of a domain? Currently considering a combination of the following: character count (the fewer the better) TLD desirability (.com > .io) age (how long ago was the domain first registered) real English words What else should be considered? How would you rank these in order of importance? My site Zephie tries to rank how rare a domain is and assigns the domain "zephs" - rareness points. Would like to make the points reflect how collectors think about how rare a domain really is.