Yeah, I'm using them as soft bookmarks. Turn them into hard bookmarks every month or so, not to actively look at them, but the firefox address bar searches in bookmarks as well and offers them up first when typing, so I have a repository of things I've declared interesting / cool / good before that I can refer back to when typing keywords into the address bar. Messy, but it works! I must have a couple tens of thousands of bookmarks by now...