“Writing a blog entry about a useful and/or interesting subject forces me to extract the salient features of the link into a two- or three-sentence elevator pitch to my readers, whose decision to follow a link is predicated on my ability to convey its interestingness to them. This exercise fixes the subjects in my head the same way that taking notes at a lecture does, putting them in reliable and easily-accessible mental registers.”

[via Halley’s Comment]