Very good point, and touches on a potential piece I'd like to write sometime. Used to, bookmarks were like a collection of good books -- easily filed away, organized, and still as good when you opened them a year later as when you last touched them.

But not anymore. They change. There's tons of them. And organization sucks, though FF isn't as bad as Chrome and IE, but the general paradigm of shortcuts needs to be re-evaluated. I don't like web-based services (for many reasons), and I've yet to find a fitting extension that works for me.

So yeah, I can see how this usage pattern has arisen, but I think the answer is ultimately up to innovation that has sadly yet to occur.