It&#x27;s really just that a strong social media network is needed.  Twitter&#x27;s format works well for this, but I wouldn&#x27;t be under any delusions that no one would fill the gap that Twitter left.  Social media isn&#x27;t very entertaining unless it capture a significant portion of the market, I&#x27;m fairly confident that people would settle on a new service instead of being fractured across a bunch of different social networks.  This is a big part of the reason why Facebook and Twitter have lasted so long.  There are lots of other companies providing very similar services, I&#x27;ve tried a few, but without friends on there there isn&#x27;t much of a point.