Maybe the responsibility and the legal loopholes of such a possibility are too high. But that does not absolve social networks and the like to acknowledge the fact that people have an associated intent with what they share online. It is their responsibility to guard their users' intent and motivations at all times.

In fact, I'd be ready to accept your challenge. I can risk a lawsuit in order to protect my users. After all, when have patent trolls ever stopped passionate people from creating amazing products?