About 60 % are simply retweeters, which is not the most efficient way to use Twitter. (socialmediaexaminer.com)
In, for a current example, the coded nods and winks that accompanied a photograph of Ravel Morrison around the internet earlier today, the tweeters and retweeters noting with interest that he was standing in front of a car with some friends whilst simultaneously black, yet appalled that anybody might think they were seeking to imply anything. (sbnation.com)
In this case you can post a thank you tweet to «top retweeters» of your content, and mention them by their twitter handle. (forsengfiction.com)