Answer to Puzzle Contest (from the winner):

"Complete the series with " - ".

The series consists of the letters of "Morse Code" spelled in Morse Code, with the dots and dashes reversed."

Winner: Al Siller, Rockville, MD

Contest Statistics: Newsletter sent to 300973 subscribers, 14 answers submitted, 12 answers correct, 85.71% accuracy. Chance of a correct answer winning: 8.33%.