This week Facebook’s ban-bot went berserk; Github went down; and all Google services collapsed for a few minutes, taking 40% of the Internet with them. Just another week on the Internet, then. We love our centralized services, until they let us down.Bruce Sterling calls them “the Stacks”: Amazon, Apple, Facebook, Google, Microsoft. In his most recent always riveting State of the World conversation, he wrote:In 2012 it made less and less sense to talk about “the Internet,” “the PC business,” “telephones,” “Silicon Valley,” or “the media,” and much more sense to just study Google, Apple, Facebook, Amazon and Microsoft. These big five American vertically organized silos are re-making the world in their image.Other proto-Stacks want to join that number. Once upon a time, Twitter was essentially a protocol: then they became aware of “the increasing importance of us providing the core Twitter consumption experience through a consistent set of products and tools.” Meaning they want to be a Stack. Github used to just host git repositories; now it does issue tracking, project management, and more. Call it a specialized business Stack for software development. And Yahoo is either a second-tier Stack or a Stack wannabe, depending on how generous you’re feeling today.They don’t want much, those Stacks. Just your identity, your allegiance, and all of your data. Just to be your sole provider of messaging, media, merchandise, and metadata. Just to take part in as much of your online existence as they possibly can, and maybe to one day mediate your every interaction with the world around you, online or off.