The document discusses the use of wikis for public consultation and engagement. It provides examples of how wikis have been used, including a breastfeeding campaign in Brighton that saw limited success due to the polarizing topic and lack of collaboration. Key lessons are that wikis work best for complex consultations with a specialist audience and when there is a genuine need for collaboration and co-production. Factors that contribute to wiki success include targeted audiences and addressing the right issues with continual support.