I totally agree. I think we should have "personal search engine". May be a chrome plugin or something. It keeps track of every webpage I visited and searches those pages to get to relevant information. If I view "Thai Red Curry recipe" page some months ago, when I search for the term again, the plugin should be able to bring up the same result based on amount of time I spent on the page. This way, I have access to stuff that I forgot to bookmark.