On Monday night a crew of silicon valley puppet-masters came to Oxford to talk about social networks and what comes next, including founders of Twitter, LinkedIn and Facebook. This overview from Mercedes Bunz in The Guardian covers the discussion nicely.
Seeing the line-up, I wish I had been able to attend. In presence were three very interesting characters. Peter Thiel, who conspiracy theorists may recognise as the real inventor of Facebook and the cheque book that set it up back in the beginning as an experiment to see how much private information we'd be willing to share publicly on his database if he made it useful for us to do so. Would have been fascinating to meet him and ask him about some of the internet theories we read about.
According to the experts, it seems what will come next after social networks is more of the same - but services that make real use of all this information.