Figure 3. Inviting Facebook friends to join a team using the Mums Step It Up app.

a) Invite Friends Page. b) When participants click on the “invite friends” button, a pop up appears listing their Facebook friends. They select 3–7 friends that they would like to send an invitation to. c) When they click on the “send request” button, another pop up appears which allows them to send a personalised message to post on their friends’ Facebook wall. d)”Captain” women receive daily emails updating them on their friends’ responses to their invitations.