“And just to round off my DPI rant… DPI is short for Dots Per Inch,” Rom said. “Think about that for a second, then tell me where on your computer you have dots? I see pixels on my screen. They look square to me. Not only has the industry succeeded in establishing the sensitivity of a mouse as the most important feature of the product, it has done so by using a term that is technically incorrect. Isn’t that amazing?”

via Does DPI matter in gaming mice? One mouse-maker says no.