Saw your thread elsewhere and was surprised to see so many defend search engines in a community of alleged privacy aware tech savvies. Go figure.
A way for organizing bookmarks is needed. Hierarchically or better yet by tags. Maybe some shit like tiddly wiki, or org-mode for the emacsen.
I havs noticed that the best content I usually find in .edu sites belonging to university professors, which I have usually found through the G. If there happened to be an index of useful such sites findable by subject (math, biology,...) that would be super useful.