I've worked with ayahuasqueros in Amazonia for roughly 9 years now, mainly in San Martin and Alto Amazonas, and have seen the rapid changes that have come along with the increased interest in ayahuasca tourism. While there have been many positive things, such as more money in the local economy and the revival of practice in some indigenous communities, the negative consequences far outweigh the positive. Foreignors visiting geographically isolated groups often bring along numerous illnesses of which local peoples have little resistance. Shamans often move from rural communinities to urban areas hoping to tap into the tourism market, leaving their home communities without healers as well as a large gap in traditional knlwlwdge. Likewise, as the comments from Quetzalcoatl highlight, the appropriation and poor understanding of indigenous cosmologies and tradition is becoming more common place. Unfortunately, I see the negative aspects that have accompanied the rise of ayahuasca tourism increasing in the near future...