Saw this interesting post recently (while searching for ["doesn't have a URL"]):
I was attracted by an idea that emerged... "The idea doesn't have a URL." In other words, a tag can somewhat represent and [sic] idea. A URL can point to one slice or view of an idea. But it cannot be captured with either a tag or idea [sic? I think URL was meant here].
An idea is no more or less nameable via URIs and describable via representations than it is nameable by words and describable by sentences.