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If you prefer to use a trackball rather than a traditional mouse, you might be interested to know that Kensington has released a new slimline version of

There are typically two types of people in this world -- those that like mice, and those that prefer trackpads. There is a third group of computer user, however, that is quite small comparatively, but very passionate -- trackball lovers. While trackballs have largely fallen out of favor with most consumers, there are still some folks that swear by them.