We do not restrict the number of projects a customer can join; however, it is important to note that while Family Tree DNA does not impose a limit to the number of projects one can join, we will not tolerate customers joining multiple projects with the purpose of data mining or finding information that is not relevant to one’s personal ancestral origins. Family Tree DNA reserves the right to remove people from projects at its sole discretion or if it feels that a participant is abusing the system in a way that may infringe another participant’s privacy.