And I fully agree with the notion of "backing up" or keeping track of what was there (that's why I typically include a screenshot in my links).
But the key thing for me is that the time spent in the context shift "in and out" of writing starts taking a toll--especially since I tend to only post about links over breakfast, since I seldom have time to write "properly" by the end of my day, and prefer to devote my breaks to moving and doing house chores for "exercise" and getting tech out of my mind.
So a link blog of such density seems like a tricky juggling act...
Like reaction videos, this is a great way to repackage original material for a wider audience. The cynic in me bristles at the "value capture" here but the optimistic view is that this approach could genuinely breath new life into the "blogosphere".