Browser Tabs Need to Avoid Duplication

I honestly don't know what I did before tabbed browsing became possible. I guess I used to have a few browser windows open at the same time and had to figure out how to get to the one I wanted to view next. The introduction of tabbed browsing greatly increased my Web efficiency.

Today it occurred to me, not for the first time, that I wish tabbed browsing had one additional feature. If I click on a link in a window (or, e.g., in a sidebar like Yoono), and if a tab with that site is already open, I'd like Firefox just to take me to that open tab and display the new page/content. Otherwise, by the time I've been browsing for an hour or so, I have so many tabs open that their labels are relatively meaningless or I have to scroll the tab area (which works OK but is just another time-consuming step).

I can see some downsides to this idea and it probably needs to be thought through better than I just did but I think the basic idea has some real merit.

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