Wouldn't it be grate to make an app that connect your Facebook relatives data to Geni without setting up an account on Geni?
It's for those who don't want to bother mastering their family tree. For most of people, in other words. Many has basic family data on Facebook profiles - the most close relatives. And many of them could agree to share it with genealogy community on Geni if any easy way exist.
Would you use this kind of invitation if it exist?