Mozilla labs has released a new plug-in for Firefox that may very well transform the way you use the web. The elevator pitch is that it allows you to create mash-ups on the fly, directly in your browser using existing commands, and without leaving the page you are on. The upshot to you is that it makes your browsing much more efficient, reducing the back-and-forth between pages that most users experience today. Check it out for yourself. If you give it a try, it'll totally change the way your browse the first time you use it.