I am a host in Rio de Janeiro and recently received a request from someone 'who has a lot of clients' and was interested in my apartment'. He asked me to contact him via his Instagram account. Of course I reported the person and posted a warning in a Brazilian group for hosts. It turned out that dozens of people had received the same, identical request for properties all over Brazil. So this was obviously not just a guest trying to save money by negotiating outside of Airbnb. This looks like a much more elaborate scam. Does anyone know what's behind this?