<DIV>Web developers did it to bring together multiple sources onto one internet page. Musicians and DJs followed by sampling songs from different genres to create new music. Now everyone is doing it: at work, on the weekends, in business. It's time for professionals and businesses to cash in on the mash up.<br><BR>The days of being defined by a single job title are vanishing. The future of business is project-based, rather than role-based. In the new economy, core competences are increasing and employees are perfecting multiple skills that make them more of an asset in the job market and within an organization. With the rise of the workplace "mash up," ambitious professionals are creating new revenue streams with each new skill they add. At the same time they're making themselves highly desirable, better paid and carving out more fulfilling and authentic work lives. With useful advice and hands-on practice, <I>Mash-up!</I> explains how to develop opportunities to use multiple skills, increase productivity and innovation and realize one's full business and personal potential.</div>