Personal Notes would also be nice, but labeling is more what I'm after. I envision rendering to be something like this to note an account I've labeled. In this example, imagine that you've labeled me as "Kevin (Detroit)". Every post I make would show that private label to you. If someone else comes along claiming to be me, their account wouldn't be labeled as you've set it. Likewise, if I changed my name to something else, the "Kevin (Detroit)" label you set would still stick and make it apparent to you. This also solves a problem where people change their names over time and their followers are not all aware. Recently I heard that stellainforest changed their name. I need to track down the new one.