Problem: I am cultured and read. I use bookmarks to keep track at where I left off on. So when a new episode or something comes out, I watch it and edit the bookmark. For that I have to go to bookmarks, search for the bookmark, show bookmark toolbar, search for it, and THEN update it to the latest episode.
Solution: Active bookmark suggestion; search for bookmarks, see how much of the bookmark matches the current page and show it on the little bookmark icon (I just put some lines on it). Id set some kind of limit for it like if the match is 80% or higher then suggest it.