I see what you're saying - but for the 1% that are influencers (who share and curate web content) - there is a strategy called POSSE http://indiewebcamp.com/POSSE (Publish (on your) Own Site, Syndicate Elsewhere)

Basically a lot of people have their own independent rig, and then spam out the link to the silos, while at the same time, operating 5-7 social media accounts where they engage with the feedback on those silos (app.net/ello, etc)

We all know these 'web personalities' - the Grubers, Anil Dashes, Marcos, and even the Gaynors