[Arech]

Yes sir, exactly. There's too much hassle in manually categorizing and tagging everything and it still inferior to search. Just like in good ol' days site catalogs were made extinct by search engines development...

It's ok if bookmarked pages change. It's no different from a normal search engine, you just reduce the scope of a search from the whole internet to some private curated collection. Google CSE is good for that, one just need to write an interface to update it with bookmarked links...