Answer: attentiongetter

AnswerCrossword Clue
ATTENTIONGETTERYoo-hoo
ATTENTIONGETTERVerbal nudge found in each set of puzzle circles
ATTENTIONGETTERPsst, for instance
ATTENTIONGETTERPsst, puzzlers!
ATTENTIONGETTERPoke on Facebook, say
ATTENTIONGETTERBig wave, e.g.
ATTENTIONGETTERArm wave or finger snap
ATTENTIONGETTERIt'll catch your eye