username "space" between first and last name
Hey there it is nice to see a great web site for NSS.
One issue I had was that it took me thirty minutes to realize that my user name login had to have a space between the first and last name. I think many people would have given up and abandoned the situation.
This is very unusual in my experience.
If we want to maximize participation, and to save other people the headache of this problem please be more explicit it mentioning this fact.