After upgrading to JimdoBusiness or JimdoPro, the ad-box in the sidebar disappears and leaves more space for your ideas! Why not use this newly freed-up space for your own advertisements, Google Adsense, or current information for your site's visitors?
The AdvantagesHowever you decide to use the space in the sidebar, with JimdoBusiness and JimdoPro, you decide what goes there. For a professional presence, it's an important advantage, if your visitors only see the content that you want them to see. You've gained a valuable piece of "real estate" on your site when you take control of your sidebar.