Does blinking act as a type of feedback in conversation? To handle this question, the authors constructed a corpus of Dutch conversations, distinguished short and long addressee blinks during extended turns, and measured their occurrence relative to the end of turn constructional units (TCUs), the location where feedback typically happens. Addressee blinks were indeed timed to the end of TCUs. Also, long blinks were more likely than short blinks to happen during mutual gaze, with nods or continuers, and their occurrence was limited to sequential contexts in which signaling comprehension was especially pertinent, proposing a special signaling ability of long blinks.