Yeah, except there is no proof that there is any exchange of goods taking place in the overwhelming majority of these.
Do you think teenage girls and boys are really going to start selling their nudes? Just on a shallow examination of this possibility, it seems exceedingly unlikely to ever be a problem on a scale larger than a handful of cases. The social aspects of trying to sell "nude" pictures of yourself would be utterly taboo. The only market would be for people that you don't know, yet then the risk increases dramatically. There are already 100s of sites where they can do exactly this (pretending to be 18), yet its not happening, at least on the scale that the fear represents.
This happens already today not only with Snapchat, as well as on the multitude of cam services out there. (The taboo you mention makes the problem worse, as it can quickly escalate to blackmail.) Is it likely to get worse with integrated payments? I would guess yes.
I didn't say there'd be an epidemic of underage people selling nude selfies. I said I think this is going to get interesting. By that I meant that there will likely be some overlap between the child porn stuff and the new payments system.
Do you think teenage girls and boys are really going to start selling their nudes? Just on a shallow examination of this possibility, it seems exceedingly unlikely to ever be a problem on a scale larger than a handful of cases. The social aspects of trying to sell "nude" pictures of yourself would be utterly taboo. The only market would be for people that you don't know, yet then the risk increases dramatically. There are already 100s of sites where they can do exactly this (pretending to be 18), yet its not happening, at least on the scale that the fear represents.