I kind of agree with you here. Perhaps it's just my natural aversion to mass hysteria, but I think that allowing them to use the photos they provided you with a

I kind of agree with you here. Perhaps it's just my natural aversion to mass hysteria, but I think that allowing them to use the photos they provided you with an app, bandwidth, servers, and a web application to create is pretty reasonable. Now, I assume that everyone (including Instagram) is aware that using them in any harming way to the original author can only ruin their business. Sure, perhaps legally they COULD use that picture of me sipping on my latte to advertise extra large dildos, but I'm going to assume that they're aware that would be a poor choice. However, if they want to use the picture of my feet in the sand as stock photography somewhere, go for it. I'd be flattered. I would happily count the $10 I would have made on a stock photo website an appropriate fee to access to their service.