This question exists because it has historical significance, but it is not considered a good, on-topic question for this site, so please do not use it as evidence that you can ask similar questions here. More info: FAQ.
Whether you agree with this decision or not, can we all take a look at this banner, and consider improving it? As it stands, this banner sits as mere sub-text to the "locked by" box. Can we make it more prominent? This banner is extremely important: it's tasked with preventing the content in question from becoming a broken window.
Ideally I'd like to see it sit above the question title. It should announce to the world in no uncertain terms that this question is simply an artifact of history, and not regular content on Stack Overflow.
Ideally, and to make the point extra strong, perhaps we should consider altering the normal Stack Overflow color theme slightly for these questions. When someone browses to the "weirdest programming language features" question, it should be patently clear that something's different.