Sam Jacob from architects FAT talks about cultural artefacts and interestingly lists Instagram at minute 4.44.
“Like most people I have a love/hate relationship with Instagram, but I think it is an amazingly contemporary object, it tells us a lot about where we are and what we want to do with the world. I love it because it combines high technology, network communications, portable devices, processing power, algorithms, all of that stuff which is quite hard to understand because it is so advanced, but its allied with this kind of sickly, retro, nostalgia, like everything is from the seventies. I think that combination is quite revealing, I think the idea of a futuristic future must have stopped around 1982. I think the future is much more complicated, and I think digital culture explores this a lot, it uses incredibly new forms of media, techniques and tools, but often recycling elements of the past. “