There is evidence that 1000 or more additional weak tornadoes may occur each year and go completely undocumented. The Fujita Scale was simple enough to use in daily practice without involving much additional expenditure of time or money. From a practical point of view, it is doubtful that any other system would have found its way into widespread accepted use, even to this day. The entire premise of estimating wind speeds from damage to non-engineered structures is very subjective and is difficult to defend from various meteorological perspectives. The FPP scale rates the intensity of the tornado, and measured both the path length and the path width.
Many webmasters think counters are amateurish looking.