The key distinction being the ability to find the URLs that you don't know by fishing for the one piece you do remember, that may (inconveniently) not be until

The key distinction being the ability to find the URLs that you don't know by fishing for the one piece you do remember, that may (inconveniently) not be until the end of the URL. An example: http://www.boston.com/bigpicture/ http://www.boston.com/bigpicture/ which I inevitably reach by typing "big"; this was un-possible with the previous iterations.