clikkit is a new way of browsing. When single-window browsing doesn't quite satisfy, but multiple tabs are inconvenient, clikkit provides a way of dynamically loading links in a frame.
The best way to see how it works is to try out the demo.
clikkit is a jQuery plug-in, so you can integrate it with your site and selectively apply it to your choice of links. You can also install the Chrome browser extension that lets you browse reddit, Hacker News, hubski, and even Google search results (experimental!) with clikkit.