At first glance, the Golwin YouTube channel looks pretty nondescript. With only 218 subscribers and most videos getting fewer than a 1,000 views, it would be an easy one to miss.
A little digging, however, reveals that it was created by a sports marketing company launched in the second half of 2010 and registered under the name of Riama Aoas in Brazil. The channel was part of a small business set up by her father Marcos Aoas, to produce clips of youth football matches, notably those from Corinthians.
The operation worked more or less like this: Marcos himself would film the games; Riama would edit the clips, pick some random soundtrack and then convert them into DVDs; then her brother Luan Aoas, once a promising footballer who featured for Corinthians and Sao Paulo, would sell them around the training ground to other parents for R$30 (£6).