Extensive research has been conducted on the motivations of volunteer tourists; however , the scope has not included how motivation is expressed through posting of images on social media . This study examine s the relationship between volunteer tourist s’ motivations and social media use through the identification of picture publishing behaviour based on motivations. An online survey yielding 260 complete responses is used and statistical tests investigate the relationship between demographic factors, moti vations and social sharing of photos. The results show that demographics have little impact; however, there is a relationship between motivation and photo sharing and between motivation and volume of photos. Additionally , including a profile of onesel f is also an indicator of low ( shallow) motivation.