Google closed it down. Like it also did with Google Reader and eventually XMPP federation for Google Talk (now Hangouts). Google developed a lot of cool tech fo

Google closed it down. Like it also did with Google Reader and eventually XMPP federation for Google Talk (now Hangouts). Google developed a lot of cool tech for federation and the open web (some of the protocols my project and GNU social use, for example) and then had a change of heart sometime around the birth of G+. I'm not sure this says more about federated projects than Google itself?