I browse the site looking at the Related Questions list and I often come across old, upvoted (and to me, useful) questions which were closed, perhaps because they were apparently abandoned by the asker (without the improvements the Close voters requested, such as this question). Still the questions are on the site, and interest me.
Is there a guideline on whether I should bother to vote on things that were closed long ago but not removed? (If I can vote on them, then in what sense are they "Closed"? Does the word really mean anything if there is no removal from the site? Why have a Closed status? OK, that's 4 questions, so only look at the first one, please.)