Can't remember who said this. Maybe TimOReilly?
But they pointed out that many big internet-hits were basically just webified versions of Unix CommandLine tools.
|GitHub||git / csv|
Therefore, find a tool that hasn't been webified yet and create a service around it.
It makes sense. The patterns of behaviour (PatternLanguageForTheSocialNetwork) are likely to be rediscovered / reinvented in every new medium / network.
See also :