This article explores a classic dilemma concerning the extent to which anthropologist fieldworkers may influence their fieldwork hosts. This dilemma arose in the course of the author’s research on kolam drawing practices among diaspora Tamils in the UK. Kolam constitute a popular visual practice among Tamils in India and Sri Lanka, but less so in the diaspora. However, the researcher’s interest in kolam practice began to awaken an interest on the part of diaspora Tamils in the UK and affect the very practices researched. Does this constitute an intervention or might it be considered an appropriate form of inspiration? The article makes a contribution to the literature on ethics and on diasporic communities, whose members, although reticent to perpetuate practices that might upset their host society, may nevertheless defer to researchers with specialist knowledge of their homeland. © RAI 2012.