Sometimes I think of URLs as being a building block of effective modern communication - long may they continue. Used carefully they can provide context, streng

Sometimes I think of URLs as being a building block of effective modern communication - long may they continue. Used carefully they can provide context, strengthen arguments, open windows of thought, and provide historical reference (clearly worth a shout-out to archive.org for helping with that last category, too). Stable, unchanging URLs (at least in terms of the content they address) are better than ones that may shift, and there's something about a hierarchy of origin in there too (in other words: if possible, link to the original source/paper/etc instead of an article -- unless the language used there isn't reasonably comprehensible for the intended audience).