Comment Re:Copyright violation? (Score 1) 230
There are no legal issues with an end user altering the presentation of what they receive to suit their needs. It's not like you're under contract to download all of the cross-site scripts today's hipster web developers burden their creations with. Injecting some Greasemonkey Javascript or blocking malicious code can be interpreted as a derivative work but there is no further distribution to other parties to make the case of damages through copyright infringement. This is commonly done with screen readers and other non-traditional browsers that need to simplify the content. Having a middle man do that without consent by either sender or receiver is another thing entirely.