As others have noticed, new users often need a little bit of encouragement. As a way of doing this, I'll sometimes look at questions and answers posted by new users and specifically try to help them. At the moment, the only way to do that is to look at the users page of a SE site and sort it by "newest", then open the users' profiles, and then open the questions.
When a site is growing, this can become onerous. Would it be practical to have the system create a list of questions and answers by users with less than [number] reputation? How would such a feature be implemented?