Great look at The Pointless History of Stylus Advertising: The Worst E-Ink Spots From Samsung, HP, Apple.
Outside magically minimizing files, Stylus pens are often shown circling things and crossing things out. In tons of ads that feature Stylus pens, users are constantly shown looking at an image or a website or some product, and simply using the pen to circle things, point to things, or cross things out. In another ad for the Asus’ Eee slate, for example, a fashion blogger is showing doing all three (0:33): X-ing out one picture, circling another, and then drawing an arrow for good measure.