I would like to pass along a Firefox add-on that my brother showed me recently.
CoolIris Previews (link) is an add-on to Firefox that basically gives a preview of a link on a web page when you hover over it. When you do, a small preview window within the same browser will open up.
You can essentially multi-table 2p2 with this add-on. The add-on also creates a small "Stack" tab on the right side of your browser. This collapsible tab allows you to save previews of links on the right side of the browser window, so you can go back and visit those links in a small preview window (or you can stay up to date with your current favorite thread).
Link to large image
