A minority of highly active users produce the vast majority of tweets from U.S. adults, according to a recent study. But what about adult Twitter users who tweet relatively infrequently? Here are some facts about so-called Twitter “lurkers,” based on the recent study.

Lurkers report visiting Twitter’s site less frequently than more active tweeters. Around one-in-five lurkers say they visit the site every day, compared with 55% of more active tweeters.

Twitter lurkers are more likely to use the platform to hear other points of view than more frequent tweeters. When asked whether they use the site to express their own opinions or to see what others are saying, 76% of lurkers say they use the platform primarily to see what others are saying.