"Sharing" Horoscope signs?

Its beyond me how someone can claim to have 25 years of experience as a so-called astrologer and not understand that their is a such a thing as a CUSP. I know astrologers with 40 years of experience that run major astrology websites and write horoscopes and charts for huge software programs. All agree and KNOW that their are CUSPS. Why someone would think to say they dont exist I dont know, but there are a lot of lunatics in the world =) Good Luck!