Bookmark and Read Later Apps Compared: Read It Later vs. Instapaper vs. Readability
Chances are, you stumble upon a lot of articles during the day that look interesting, but that you don't have time to read right now. Lots of services have cropped up to solve this problem, and today we're looking at the most popular three and pitting them against one another: Read It Later, Instapaper, and Readability. Here's how they stack up.  (Lifehacker, 20 maart 2012)