Is there a list of Twitter accounts (of ideally well known people) that are auto-refollowing their followers?
Try http://www.cybergenica.com/blog/18000-twitter-users-who-follow-back/ and http://www.letsallfollowback.com/. But keep in mind that lists like these are often out-of-date. Also, you'll find out that not all users who promise to follow back actually do it.