I am now a proud user of a 24 inch monitor at work and I realized that when I read large texts, the amount of white on the screen starts to hurt my eyes. Therefore I’ve written a small bookmarklet to black out part of the screen on demand and have a link top left to show and hide the blinds that cover the rest of the content. The blinds are fixed position so that I can scroll the content behind them. I also add padding to the bottom of the document to have enough scrolling space.
Here’s a blog without reading blinds:
The same blog with reading blinds on:
The bookmarklet is hosted on my server, to install it simply drag the following link to your links toolbar: Reading Blinds