Ah yes, that's an excellent idea (and an excellent way to phrase it - "time-shifting").

Occasionally though, you might miss something if you time-shift it. Sometimes, I don't time-shift my reading for fear that I might miss something (oftentimes it's an opportunity to comment on the article while people are still reading it, in hopes that someone else will comment on it). I sometimes reassure myself that email notifications will take care of that, but some services (reddit in particular) don't give email notifications to people (they have another button of showing who replied to your post, but not everyone reads that)