I've been reading too much on Instapaper. Saving articles for later is a powerful way to manage my time, but it produces a huge pile of content that I then feel obligated to work my way through.
Instapaper has the opposite effect on me. I save many articles there, and when I visit the site the first thing I do is delete the articles I am no longer interested in reading. Usually that’s more than half of the articles I’ve saved. (“Why did I think I wanted to read that?”) Very liberating. The key is not to visit Instapaper too often — twice a week is about right.