Search doesn't always work. Sometimes when I try to find an older post (of mine or somebody else's), I don't even know where to look. Most of the times, I can't remember what the exact wording was. So in order to avoid needlessly taxing your brain, wouldn't it be a good idea to simply bookmark any posts that one wants to keep for future reference?
Really want that, too. Sometimes I go through past archived threads and only want to retain a few posts of special interest. Best would be if the bookmarks were organized in the overall bookmark folder by thread titles or editable directory names. Though I remember similar request was raised a while ago and Baron's answer was (correct me if wrong) to use the browser bookmark features.