Determining whether your heritage involves royalty or witches or Kevin Bacon normally demands some level of interest/involvement. Put the ancestral grunt-work on your family with Geni.
Geni is a preposterously free and simple way to create an online family tree: fill in your personal junk, add a branch or two with known relatives, and enter in their email addresses. This'll trigger the service to invite said kin, beginning the domino effect of a "How You're Connected" network expansion, resulting in such discoveries as:
* Your great-great uncle is an ailing baking soda magnate with no known heir, or one other potential heir who's deathly allergic to bees
* Your third cousins are hot, and so are your first cousins who live in West Virginia
* You're predisposed to infertility -- or so you'll tell the girl in your bed holding a sealed condom
* You are deceased
Though Geni also offers Facebook-y functionality (messaging, photos, calendar, etc), outreach/access is limited to connected family members, saving you from the hexes of newt-boiling strangers, and a lonely Kevin Bacon.
Sign up for a family tree at Geni.com