I have mixed feelings on these points. On the one hand, since blogs tend to be personal, non-professional, and unpaid, they ought to be ideal venues for people to reflect on whatever they happen to be reading, whether it's brand-new or only new to them — or not even new to them: over at Tor.com there is a long-running blog series on re-reading Robert Jordan's Wheel of Time series, which I think I have mentioned before in these pages. I'm pretty sure I've also mentioned group reading/blogging projects like Crooked Timber's Miéville Seminar and the Valve's Book Events, like the one on Theory's Empire.
But there is not nearly enough of this kind of thing online, and I blame, as I have so often blamed in the past, blog architecture itself, with its relentless emphasis on novelty and (relative) brevity. We need to fight against this — I need to fight against it. Why shouldn't I spend a month blogging my way through a big old book? Maybe someday I will. . . .