The community-network approach is the fourth proposed by London and Palen. This views the community as an "interactive social group". Two perspectives are noted: community lost and community saved. The community lost perspective argues that the role of the neighborhood is becoming more limited due to technological advances in transportation and communication. This means that the small-scale, local community is being replaced with more large-scale, political and social organizations. The opposing side, the community saved side, argues that community activity increases when neighborhoods are gentrified because these neighborhoods are being revitalized.