Magician Paster offers a plethora of useful information about your computer, but is hindered by the intrusive interface used to display it. While there are options to minimize the information or move it to a second desktop in Mission Control, the app lacks enough polish to be something you'd leave on all the time.
Magician Paster is available on the App Store so you won't have to deal with any of the standard security issues that come with third-party apps. After installation, you can open the app to find numerous windows filled with information about your computer. The interface is actually very useful, if not entirely visually pleasing. While you can change which items appear and how they appear (there is a minimize option if you double-click any one sticky note), the interface remains a little messy and it eats up a lot of screen real estate. Our solution during tests was to create a second desktop and place all of them there, but the usefulness of the app is minimized somewhat by doing this.
MagicianPaster is, overall, a solid app. While the screen real estate they use up is at times frustrating, and the options for changing the interface are limited, the overall usefulness outweighs all that.