BabyBook.me is a memory book and live journal powered by Facebook and Twitter. See the quick intro video below:

Built using Adobe Flex, Ruby on Rails, Famiva Platform, Facebook, and Twitter API.

After many months of working nights and weekends, Famiva is finally ready for public beta! So, what is Famiva anyway? It’s a free social network and collaboration service for families. Basically, it’s a web site that allows you build your family tree. Every relative you add will get the ability to complete their family tree by adding their relatives, and so on. Everyone works together and collaborates to build the “family network”.

Famiva is also a private portal. Features include photo sharing, comments, member profiles, family calendar, maps of photos and people, stories, events, reminders and more. The family network is tightly integrated with tools that let you share information with your extended family, keep track of who’s who and what’s going with everyone. For example, click on a member anywhere to see profile, their immediate family, the 3-level family tree or the entire family network. You can relate photos and stories to people, see them on the world map, etc.

I think Famiva demonstrates how Ruby on Rails can be used to develop complex web applications with non-trivial data structures (graphs) and Java integration. It also a nice use case for Ajax, Google Maps and Flickr integration.

To learn more about Famiva, check it out for yourself at http://famiva.com and visit the Famiva Blog.