These products have come to be called ‘social media,’ but that’s not what Flickr was. Flickr was an online community. The reason they started calling it social media is because you can sell media. You can sell column inches, you can sell broadcast hours, you can advertise against it. But Flickr was not social media. Flickr was an online community.
Original: https://medium.com/@reidhoffman/the-right-way-to-build-an-online-community-3-rules-from-investor-and-flickr-cofounder-caterina-32d7b48b342c