On a related note, when the autocomplete system sees that you are typing a URL, it could suggest URLs from browser history as completions, with the most recently visited URLs being shown first. Although, some URLs are long. And it’d suck to complete to the wrong URL, both for reasons of embarrassment in some cases and for reasons of privacy on other cases. So I guess it’s better that autocomplete don’t do that. Also it would probably need to show both title and a thumbnail of the page in the preview because many URLs don’t contain info about what’s on the page. Would be hard to fit sensibly on the screen.