A tweeter's link to a long-form journalism site -- http://longform.org/ -- led me to something called "Readability," which is a way to read an online story without all the web-page stuff that comes with it. And it's amazingly easy to use.
If you go to the link above, you just drag the "Readability" button on to your bookmarks toolbar. When you come across a long story you want to read, click that "Readability" button and it will convert the page into a format that's easier to read. Basically, it strips away all the ads and web-page accessories and gives you a bigger type size while keeping the art. The story is much more suitable for printing, too.
That longform.org site, by the way, posts narrative stories that you can convert and read on an iPhone or iPad (or Kindle, or web) using its Instapaper program, which also allows you to save stories to read later.