There is a firefox extension called savelink which produces "favorites" like MS IE does.
Accessing firefox from the "outside" has always been difficult, which is why some other browsers such surf and uzbl are more attractive.
The only way I can think of with firefox would be to have a javascript running which logged the shown page's url to the clipboard.
But if you can make do with do with just the window title - well, you've already found the solution
I myself would love to know how to grab the url of the current page from outside of firefox.