Use social media. Social media is not just for fun. It can be incredibly useful in locating a missing family member. Reports indicate that law enforcement agencies are utilizing social media to help spread the word about missing persons. You can use these tools, too, to try to track down your relative. Post on Facebook. Facebook is used by people of all ages around the world. Make a post about your missing family member and ask people to share. The more "likes" you get, the better your odds of reaching someone who has seen your relative. Try Twitter. Twitter is also a great way to connect with a large number of people. Tweet about your missing family member, and make sure to include a picture and last known location.