Reddit

The site of Cory Doctorow

It's a good read. This looks like an updated version of the original, but it's his blog and it seems like he just added more detailed post-mortems.

It's one of those things where you think "how does every platform fall into the same pattern of growth and decline?". He breaks down the capitalistic forces and motivations of the players well - you start to see it's an inevitable outcome if you build a platform in the form of capitalism we live under