When I first started using G+, I was adding everyone into a giant “Friends†circle. This proved to get very noisy, especially when you have someone like Robert Scoble in there. You may want to read what he has to say, but not necessarily all the time. Add circles for people that may get noisy. G+ doesn’t allow a subset of your circles yet (eg: “Everyone minus <a specific circle>), you have to build that yourself, but then you lose the ability to use the top-level “Streamâ€.