Obesity is a major health problem that has reached epidemic levels. Efforts are needed to develop cost-effective public health approaches for weight loss and maintenance. One such approach is to develop team-based programs that may motivate people to lose weight and/or increase their physical activity. One such program is entitled Shape-up Rhode Island (SURI). The current trial is investigating whether adding both a behavioral intervention delivered online PLUS automated feedback to self-monitoring would enhance the outcomes of SURI participants.