Ideal pen names have three things. 1) Easy to recognize and pronounce. 2) Easy to spell. 3)Distinctive in the sense that there aren't ten thousand other people out there with the same name!
A lot of female authors use their maiden names for their pen name. Clearly, that would not have worked well for me. For all I know there are several authors out there with that name. Good job that I didn't go that route.
So, the link is up there. Give it a try... Find out where you are in the general scheme of things. Who knows? You may be one of a kind--or one of a thousand or more.