I had ~3300 bookmarks and just decided to bulk delete half of them that lived in random folders. Now i'm at 1400. Most of them are CS/tech/coding related. When I save a link I make myself believe its something important that I'll find useful in the future. The truth is I don't even know what is in my bookmarks anymore and I hardly ever go back to manually check what javascript article I bookmarked one year ago. Nowadays, I just use firefox awesome bar that, by default, searches through my bookmarks when I type something to search for. I also find tags much better at organizing bookmarks than folders and I'm happy firefox supports this feature.