Great point, the distinction between what is and isn't social media is absolutely quite grey. There are definitely people who would be better than me at definin

Great point, the distinction between what is and isn't social media is absolutely quite grey. There are definitely people who would be better than me at defining it in a legal way, but my general take would be start asking questions like: * Is there algorithmically driven engagement / content discovery? * What is the size of the community? * Is there anonymous interaction? Chat threads in general are, I believe, acceptable, as they chiefly involve small groups of people who know each other. Digg / Reddit / 4Chan / Twitter / Instagram would all be banned, as they facilitate interaction between large groups of people who don't know each other.