I offloaded 90% of my bookmarks into del.icio.us a while ago. It's a lifesaver, now the only things occupying my bookmarks are private links I dont neccessarily want to publish, my quick bookmarks on the toolbar, and my RSS feeds, which leads me to...

RSS in the browser simply IS the best way to deal with that. I've been using the Sage plugin for Firefox and while it's not perfect, it's pretty much the best thing I've used so far.