Cory Doctorow’s latest O’Reilly Net column neatly distills down the reason why we ‘blog:
As a committed infovore, I need to eat roughly six times my weight in information every day or my brain starts to starve and atrophy. I gather information from many sources: print, radio, television, conversation, the Web, RSS feeds, email, chance, and serendipity. I used to bookmark this stuff, but I just ended up with a million bookmarks that I never revisited and could never find anything in.
Theoretically, you can annotate your bookmarks, entering free-form reminders to yourself so that you can remember why you bookmarked this page or that one. I don’t know about you, but I never actually got around to doing this — it’s one of those get-to-it-later eat-your-vegetables best-practice housekeeping tasks like defragging your hard drive or squeegeeing your windshield that you know you should do but never get around to.
Until I started blogging. Blogging gave my knowledge-grazing direction and reward. 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 mentalregisters…
Being deprived of my blog right now would be akin to suffering extensive brain-damage. Huge swaths of acquired knowledge would simply vanish. Just as my TiVo frees me from having to watch boring television by watching it for me, my blog frees me up from having to remember the minutae of my life, storing it for me in handy and contextual form.