As my father ages, he seems to get more interested in our family history and often sends mass emails about new connections he finds on ancestry.com.
I've always thought that the data from ancestry.com would be a great way to seed a new social network. It would attract a motivated, older crowd and they would add profiles for the younger generations too. Previously looked into this and genealogical data actually has a standardized format called GEDCOM[1]. It might be a useful way for users to quickly populate their pages on FamilyLeaf.
Will send this over to him, but most of his data is in GEDCOM format... either way, good luck!