In PowerPoint Slideshow mode, the “B” key can be used to toggle between your presentation and a black screen. This can be very effective in face-to-face presentations when you want to direct the audience’s attention away from the screen. You can achieve a similar effect in Remote Demos (using WebEx, GoToMeeting, etc.) by using the “W” key.
In PowerPoint’s Slideshow mode, pressing “W” turns your screen white. If you want to draw your audience’s attention away from the computer screen in a Remote Demo, use the W key and say, “I’ve just blanked the screen…” The white lets the audience know that the web conferencing session is still active.
It is a nice tool and technique – try it!