The most frustrating thing for me when using Google's multitude of services is their login across services / accounts seems totally broken. There are certain s

The most frustrating thing for me when using Google's multitude of services is their login across services / accounts seems totally broken. There are certain services I can't log into with a certain accounts, others that automatically log me out and others that I am totally confused about what is even happening. It's not an easy task and it seems that they are trying to fix it with recent changes but it's still a total mess.