GuideService is a new adware-type application designed specifically to target Mac computers. Once the intrusion of the program is successful, the adware changes a lot of important browser settings in order to display the variety of its uncontrolled ad-type banners, deals, coupons, discounts and so on. Even though initially it might look like the adware attempts to help you save more funds from your online shopping, it is absolutely clear that its real purposes are absolutely opposite. This guide will give you more instructions about the danger of GuideService and ways of its effective elimination.