With screen sharing, Mac users can control the mouse and keyboard of one computer while sitting at another computer across the room or on the other side of the world. In a new ebook, “Take Control of Screen Sharing in Snow Leopard,” networking expert Glenn Fleishman walks readers through the steps for identifying, configuring, and using the screen-sharing option that best meets their needs. For those who want to get the most out of Apple’s MobileMe-based Back to My Mac file- and screen-sharing feature, Fleishman has also written a companion ebook, “Take Control of Back to My Mac.” Each title costs $10, or they can be purchased together for $15 at http://www.takecontrolbooks.com/snow-leopard-screen-sharing