Tabbed browsing allows us to save a lot of space in the Taskbar. Each new browser window takes up space in the Taskbar. Tabbed browsing makes sure only one browser window is open; this occupies the least space on the Taskbar. We can then open as many webpages we want in this single window using tabs.
However sometimes when we click a link in some other program or even within our open browser window, it opens in a new browser window, rendering tabbed browsing useless. We need a way to merge all tabs being used into one browser window rather than spreading them out into multiple windows.