Nice job! I agree about the uselessness of baby name wizard. You did a great job making it more interesting. Are you having any luck getting visitors or higher in organic search?
In Jul. 08 got links from Freakonomics and Kottke which led to a little burst. Ongoing organic traffic (I essentially haven't update the site except to keep the data fresh each year) seems to be about 1M page views/year. Squarely in the no profit/hobby territory, but enough that I do keep updating the data.