Not recent, but relevant.
“Marginalia blurred distinctions between writer, reader and critic. Passed from one reader to another, the margins and flypapers of some books became a sort of message board for this unique form of intellectual graffiti, with brief accolades, argumentative asides, addenda and insults. Even the greatest writers could be deflated with a sharp jab from the margins. An anonymous reader who rebelled against Samuel Johnson�s description of the weather as ‘gloomy, frigid and ungenial’ scrawled in exasperation: ‘Why can�t you say Cold like the rest of ye world?’ Quite.”