Page Eraser is a nifty little Chrome browser extension that allows you to remove parts of a webpage on the fly. The cool thing is that it deletes from the whole Chrome process all together so you don't waste excess CPU power on something that's not even on your screen. This is great for all those pesky adds on your favorite site or what not. Cool idea. I've installed it but haven't really used it. I don't know if it's something you have to get in the habit of doing but a cool idea nonetheless. The video above will give you more info.
Link to the extension: https://chrome.google.com/webstore/detail/ekofpchjmoalonajopdeegdappocgcmj