What exactly does "viable" mean in this context? Because the husband and wife team behind NameVoyager have had the baby name trend visualization market cornered for years now.

http://www.babynamewizard.com/voyager#

They aren't just using it to drive ad traffic and promote the book, but are now (since I last looked) actually charging for the visualizations themselves. And presumably people are paying, but who knows...

On the plus side, this means there's a market, but you've got a long way to go to catch them, both in regards to the visualizations and the breadth of the name database. It's a good start, though.