My only real complaint about Instapaper is that it often seems to strip out the byline, and sometimes even the name of the publication, leaving me without some of the context I like to have when reading an article. (Here's an example of missing byline: http://www.instapaper.com/text?u=http%3A%2F%2Fwww.bookrags.c... (the article is written by Zadie Smith, which I find to be very important information.))