So far this is more a fun way to share your relatives’ names than a genealogical tool, since you can enter only basic information. You also can select up to three “heritages” (based on ancestral countries of origin) and designate Favorite Family Members (but maybe make sure the unchosen ones can’t access your profile).
Once you add the Family Tree application, you can view others who are using it, but you can’t see their trees—only the heritage and favorite relatives information is visible. Of couse, you need a Facebook profile before you can do any of this.
Family Tree developers promise GEDCOM imports, tree sharing and a family finder are coming.
Even without those genealogist-friendly attributes, Facebook’s Family Tree app could be a cool way for the social networking set—which tends to be younger and probably hipper than most—to get into family history research. Users have downloaded the application 20,000 times and created more than 62,000 family tree profiles.