<i>The benefits of having a flashless copy&#x2F;cut function greatly outweigh the off chance some random site will copy something stupid to your clipboard if you interact with it.</i><p>While using Flash just for clipboard copying is not ideal, it seems easier to block Flash and stop sites from doing this (and other annoying things Flash is known for, like ads and autoplaying videos...) than blocking small parts of JavaScript APIs integrated into the browser.