This randomized comparative effectiveness trial examines the potential psychosocial and physical health-related benefits of sharing personal websites with other women with breast cancer, as well as with family and friends (PCO PLUS condition) versus sharing with family and friends only (PCO condition) in a sample of women with metastatic breast cancer.

Inclusion Criteria:

• women at least 18 years of age;
• first diagnosis of Stage IV breast cancer or a recurrent diagnosis of metastatic breast cancer, any interval since diagnosis;
• ability to complete the intervention and assessments in English; and
• willingness to attend in-person PCO workshop;

Exclusion Criteria:

• male (because men constitute less than 1% of breast cancer patients, numbers would not be sufficient for reliable analyses);
• local (i.e., same breast, surgical scar, chest wall) or regional (i.e., lymph nodes) recurrent disease; and
• use of a personal website to post cancer-relevant material in the past six months