Its also worth noting that when something goes viral, its often not contained on one social network, and it becomes impossible for the platform to measure its reach and impact.
How could twitter, for example, really measure the impact of something like that video of the Covington High School kids, which was amplified on twitter (shared by a fake account, IIRC), picked up by the media, and then talked about incessantly for weeks, all over the place?
How could twitter, for example, really measure the impact of something like that video of the Covington High School kids, which was amplified on twitter (shared by a fake account, IIRC), picked up by the media, and then talked about incessantly for weeks, all over the place?