Here are the possible solutions for mark never seen in an online crossword clue
Answer
Clue
Relevancy
erasure
Clue
Mark never seen in an online crossword
Definition
the act of erasing
notonce
Clue
Never, never, never
meta
Clue
Like a crossword clue about crossword clues, say
Definition
(US) concerned with cultural conventions; (of an artistic work) self-referential
slater
Clue
Actress/singer Helen with the CD "Crossword" (the title track starts "I found my true love today doing the crossword on the back of the 6 train")
ago
Clue
Remembrance word [CONTEST NOTE: My online crossword contest is ONE WEEK AWAY (Sept. 30). First prize, $2,500. For details visit www.alzfdn.org.]
Definition
in the past
raitt
Clue
Rocker Bonnie [CONTEST NOTE: My online all-skill crossword contest is Sept. 30. First prize is $2,500. For details visit www.alzfdn.org.]
roadtest
Clue
Trial for a car [NOTE: My online solve-at-home crossword contest is TODAY AT 3 P.M. ET (Sunday, 9/30/12). First prize is $2,500. For details, visit www.alzfdn.org.]
eterne
Clue
Everlasting, in old poetry (and the name of a Lotus concept car that, sadly for crossword constructors, will probably never exist)
