CallTalk Corporation, a smartphone and phone-time seller, chooses to use and register "calltalk" as its second-level domain. Later, CallTalk's less successful competitor, CellTalk Company, chooses to use and register "caltalk" (an intentional misspelling of "calltalk") as its second-level domain. Still later, Call&Talk, Inc., uses the domain name "callltalk" (also a deliberate misspelling of "calltalk") without CallTalk's authorization, to sell pornographic phone conversations.
Refer to Fact Pattern 15-2. By using a similar domain name to CallTalk's, CellTalk is most likely attempting to profit from its competitor's
b. fair use.
d. safe harbor.