It's currently more annoying than it is helpful, it gets in the way. It would be so much better if you could middle-mouse button on anything to make a separate little window of whatever you clicked, that stays open unless closed specifically. I don't mean new browser tabs, I know that's impossible. I just mean middle-mouse button in order to open the windows that are now also kept open.
Also, you need to be able to minimize them to avoid cluttering without closing them entirely. The chat bar in the bottom that used to hold the chats and is now obsolete could be used for minimized windows now that the newer chat system is so much better. Possibly parts of the top could also be used for minimized 'tabs'.