Oh. In that sort of scenario, I depend on my Evernote, having included it on gwern.net/Google+/LW/Reddit, and my excellent search skills. Generally speaking, if I remember enough exact text to make grepping my local WWW archive a feasible search strategy, it's trivial to locate it in Google or one of the others.
Ah, I see. So your system is less of a knowledge base and more of a local backup of particularly interesting parts of the 'net.
Thanks :-)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.