Most web developers probably don't, but neither do most native application developers. In any area there's a subset that cares a lot [1] but for most apps getti

Most web developers probably don't, but neither do most native application developers. In any area there's a subset that cares a lot [1] but for most apps getting the business model right is more effective than squeezing out a few kb. [1] https://code.facebook.com/posts/1365439333482197/how-we-built-facebook-lite-for-every-android-phone-and-network/ https://code.facebook.com/posts/1365439333482197/how-we-buil...