Privacy remains a huge issue for many genealogists and their family members. Personal genealogy websites, as well as Online Collaborative Trees available at Geni, MyHeritage, Ancestry, WikiTree, WeRelate, FamilySearch and OneGreatFamily, each offer different levels of privacy protections. The lecture will discuss the varied approaches to the question of privacy, focusing especially on legal and ethical considerations. For example, how should a genealogist respond if someone says she does not want to be on your online tree? Should minors be allowed to use online genealogy platforms? Can the right to privacy ever be reconciled with online collaborative genealogy? As genealogists increasingly utilize public, or semi-public online collaborative genealogy platforms, these questions are becoming more common. The lecture will use real-world examples to analyze the problems and proposed solutions.