The categories and their relative popularities across both surveys appear in Table 1. Nearly one-quarter of participants
said they had no idea and simply guessed. The magnitude
of this number indicates how little understanding users have
of their audience size. The most popular strategy (other than
guessing) was based on feedback: the number of likes and
comments on a post. Participants explained, “I figured about
half of the people who see it will ‘like’ it, or comment on it,”
or “number of people who liked it x4.”