I just tried Geni as a tool to create one's family tree. It is a great site and can be reflective too as you get to analyze the developments in your family.
It is amazing to see that despite the fact you regulary catch up during annual reunions, you hardly know much about your relatives.
Geni is a useful tool in solving the problem of genealogy, or how everyone is related. Each person added in the tree can also invite others, and the cycle continues. Your tree will continue to grow as relatives invite other relatives.
Each family member has a profile which can be viewed by clicking their name in the tree. This helps family members learn more about each other and stay in touch. Family members can also share information and work together to build profiles for common ancestors.
Geni was founded by former executives and early employees of PayPal, Yahoo! Groups, Ebay, and Tribe.