I just found out about WikiTree, a worldwide family tree wiki that sounds like a great way to share and preserve your family history research.
WikiTree is a free and collaborative project started in 2008. Its content is edited and owned by contributors. You can add people to your family tree one at a time, or upload your Gedcom and add many at once.
WikiTree lets you instantly add yourself and people in your family tree. You can share pages with select family and friends, or the entire world. You can also collaborate with others to add facts, memories, and photos. People are linked in the worldwide "wiki" family tree but you control the access to each individual you add.