This research explores how to communicate an individuals’ self-reported emotional state to members of their personal social network, through automatic, computer-generated, personalised updates. Results of two qualitative studies are described where participants were unwilling to disclose their emotional state fully to all of their network members, choosing to deceive selected members instead. Further, participants indicated that they would want automatic personalised updates for network members to incorporate these deceits. Keywords Deceit, ambiguity, personal social networks, computermediated social interaction, personalization, Grounded Theory. ACM Classification Keywords H4.3 Information systems applications: Communications Applications; H5.2. Information interfaces and presentation: User Interfaces, Natural Language; J3. Medical information systems.