The following thesis examined amputee support groups on Facebook. Having an 111 amputation can be a life-changing experience. and social support may be necessary to understand one's amputation. Hundreds of amputee groups exist on Face book, and many of them foster active onlinc communities. This study sought to accomplish two goals: describe how amputees use these groups, and uncover the predictors that lead to engagement in socially supportive behaviors, particularly providing informational support and emotional support. While not all groups are active, this study found that amputees do connect with others through Facebook, sometimes quite frequently. Posting on group walls significantly predicted use of informational support behaviors, and age, overall heal th condition, and posting on group walls significantly predicted use of emotional support behaviors.