[davimack]

1) When scrolling is erratic (due to the mouse, the browser, or what have you) and reading a long article, I highlight a word in the last-read paragraph to allow me to scroll that paragraph up and not lose it.

2) When pages have low contrast, but I don't want to say View / Style / No Style (alt+v, y, n - in firefox), I'll select the whole page.

3) When pages have extra-wide text lines without sufficient spacing between lines (i.e., they do not conform to typographical rules for reading ... for example, Hacker News comments), I'll select individual lines in order to better follow the length of the line.

4) When interrupted in reading a lengthy article, so as not to lose my place, I'll double-click (middle wheel button is keyed to double-click) my reading position to highlight just that word.