Daniel Reeders is a health promotion practitioner with sixteen years’ experience working on HIV, viral hepatitis, sexual and reproductive health and cancer prevention. Since 2014 he has been a researcher studying complex social systems including markets and communities. His PhD research looks at how emerging movements mobilise communities in response to health and social issues. Daniel is the author of the Bad Blood blog and director of DNM Strategic Consulting. He can be found at twitter.com/engagedpractx.