Tab Discarding... it'll change your life.
I think many of us keep a lot of browser tabs open. I personally use instances of Chrome like project folders with tabs grouped according to what I'm researching or working on.
Well, for me at least, Chrome has become quite the annoying memory hog. I incorrectly assumed that Chrome would be dumping all those inactive tabs out of memory by itself. Wrong! It *can*, but it doesn't by default. Here's how: