Skype has become so popular that it's a verb in its own right: "Want to Skype later? It's available for computers and mobile devices of all sorts. You can use Skype to call anyone who has it, anywhere in the world, for free. And those calls can be either voice calls or video calls, depending on whether you have a webcam or a phone with video handy.
Katherine Murray is a technology writer and the author of more than 60 books on a variety of topics, ranging from small business technology to green computing to blogging to Microsoft Office 2010. Her most recent books include Microsoft Office 2010 Plain & Simple (Microsoft Press, 2010), Microsoft Word 2010 Plain & Simple (Microsoft Press, 2010), and Microsoft Word 2010 Inside Out (Microsoft Press, 2010).