Second Life is a 3D virtual world created by users where residents interact through avatars. Residents can explore the virtual world, build objects, and participate in activities like education, religion, and business. The economy allows for the buying and selling of virtual goods using Linden dollars. Communication occurs through chat, messaging, and email. Many companies and organizations have a presence in Second Life to reach users. While virtual, Second Life has become integrated into popular culture through literature, television, movies, and music.