We'll see the difference in terms of performance/speed between the default XHR-polling communication channel versus the new WebSocket channel. An old version of the same video (without WebSockets) is available on my channel: vimeo.com/26238562
The WebSocket channel is supported on every browser that implements the WebSocket specification: Firefox, WebKit (Chrom/Safari). Probably soon on IE/Opera.
The BeEF tunneling proxy component is used to show the difference between the 2 communication channels. At the end of the video sqlmap will be used to exploit a SQL injection through the victim browser (using the BeEF tunneling proxy).