Google listened to my idea! January 7th, I sent this email to their ideas factory:
I often search for multiple things and find the answers I am looking for. However, it is rare that I bookmark the pages or the search strings I entered after gaining the knowledge I seek. My history keeps only a limited number of searches made and sifting through the past proves time consuming. So; say I wished to once again find the page which held the information I searched for over a month ago — if I did not remember the site or the search term, or say the site appeared on page 90 of results, it could once again be awfully time consuming finding the page again.
My suggestion is some sort of history that is saved to your google profile (much like the wonderful froogle wishlist!). Something that
saved the search string, the pages clicked and possibly some way of highlighting the page that had the answer.
Development of this could allow people to make their lists public (e.g. through an atom feed) and compilations of search strings and
answers could further aid the google search engine through some sort of additional ranking.
Anyway, this is my idea and I hope you like it.
Two days ago they released this:
Google Personal Search History