(1) The FTDA protects only "famous" trademarks; most state statutes do not explicitly require trademarks to be "famous" to be protected against dilution. (2) The FTDA, as interpreted by the Supreme Court, protected only against "actual" dilution of a trademark, whereas most state statutes provided trademark owners with a remedy whenever they could show a "likelihood" of dilution. (3) The Supreme Court suggested (although it did not have occasion to hold) that the FTDA protected only against dilution by "blurring" and not against dilution by "tarnishment" (see below).