I just got an auto-update to Firefox this morning that includes "Reader View". The function may have already been available in add-ons, but I don't check there much. Anyway, I highly approve. Iwent to the Fox news site this morning, where stories are generally cluttered with all kinds of extraneous sidebars, etc. that AdBlocker doesn't catch. The Reader View icon popped up in my URL bar, and I clicked it for giggles. Turned the story I wanted to read into a plain text page. MUCH easier reading. It automatically turns itself off when you browse back to a home page, other site, etc.
Anyway, thumbs up. Check it out if you're a Firefox user.