Very professional, I would say. Even though as a Dutchman I'm not really familiar with the concept, I immediatly understood what you are offering. The call to action couldn't be more straightforward and the "works with.." section does exactly what it needs to do. The safety pin is a nice touch.

Also, I can appreciate what you've done and why: I'm an allround developer, so when my wife and I were looking for a name for my oldest child, I quickly decided to build a name site myself. It's online in two languages: in Dutch as http://www.zeevannamen.nl and in English as http://www.valleyofnames.com.

I'd be happy to have a banner pointing to you site, if you wish? Maybe we can cooperate in other ways as well. Let me know if you have any thoughts on that.