Thanks for your wonderful work. > That's why I have been beefing up the DOM filtering code Isn't it all done through CSS selectors? Could you share more? How

Thanks for your wonderful work. > That's why I have been beefing up the DOM filtering code Isn't it all done through CSS selectors? Could you share more? How about leveraging other heuristics such as HTTP headers (response cookies for starters) or timing information?