I found my username by doing a simple Google search. I wanted something that was different and unusual. Arethusa is a Greek nymph (http://en.wikipedia.org/wiki/Arethusa_(mythology)) But I chose it because it means "excellence," according to Behind the Name: Meaning, Origin and History of the Name Arethusa. That is what I strive for in my diurnal fight against depression.

So, how did you come up with your username?