Mozilla has added a tab tearing feature to Firefox 3.1 beta, which can best be explained by saying, "watch the video above." But in a nutshell, what tab tearing lets you do is drag and drop tabs, not just within your browser window, but outside of it as well. For example, you can click and drag a tab outside of your Firefox window and it will open a new browser instance. Or you can grab a tab from one browser window into another browser instance.

Now before you say anything, yes, I know that the Opera web browser has been able to do this for ages, and Google Chrome has supported similar behavior since it was launched. But that doesn't make mean it's not nice to see the feature come to Firefox. It takes more than innovation to make a good web browser. You also have to be willing to recognize good ideas where you find them and be willing to implement them in your product.

[via Mozilla Links]