Yeah, I did the same thing. The babynamewizard was a neat ooh, aah, tech demo, but (as of early 2008 when it was literally nothing more than a dynamically updating prefix-based stacked line graph) useless for actually helping choose a name. My contribution to the genre, with the goal of being helpful in choosing a name, was: http://nametrends.net

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.