On the one hand, when I have a bookmark for a site like HN, I want it to give me a quick way to get to the front page and see the latest posts so I can read and discuss them. In this case, the bookmark is serving like a pointer to an address whose contents are subject to change.
On the other hand, I bookmark pages with specific information I want to keep so I can refer back to it later. This is where bookmarks often fail me. Websites are transient by nature and bookmarks are extremely vulnerable to link rot. What I think I'd really want is a bookmark that saves an archive of the page so that I'll always have access to the information in its original form, even if the page changes or the site goes down. In this case, the bookmark is functioning more like a constant than a variable.
I'm aware that browsers such as Safari have the ability to save a page as a web archive file which includes all the data needed to render the page in its original form. The problem is that this feature completely punts on the issue of managing a set of these web archives, delegating that task to the Finder. I want a UI that is more integrated into the browser. If I bookmark a site it should save and manage the archive automatically. Full text search on all my bookmark archived pages should be built into the address bar. Perhaps in order to avoid the conflict between the two uses of bookmarks described above there could be a difference between favourites and bookmarks.
I don't know, does anyone else have any thoughts about this stuff?