Nice! I'm curious - do you guys plan an API or something? Why I ask is I'm one of the devs of LineTime, an iPad/iPhone app which displays world history as a zoomable timeline. I could envision an app where people can view or download their own custom timelines using your data and our timeline visualization...

Anyhow, here's a demo video of LineTime: http://www.youtube.com/watch?v=eW__WZ6pxJ8 Shoot me an email if you're interested: john @ linetimeapp com

Edit: Just noticed the timeline stuff is created client-side only, so maybe it isn't as good a fit as I thought. Are you planning on enabling clients to store timeline info on a server and create their own timelines?