The Nest Unclutterer helps keep your Twitter account tidy

"Can a real person actually follow 700 people? The Nest Unclutterer protects your privacy from marketers and businesses by blocking followers who are already following too many people. It removes followers who have been inactive for a given period of time. It helps create a whitelist of users exempt from any rule-based actions. The Nest Unclutterer will help you render those little nuisance birds as extinct as the dodo. The Nest Unclutterer allows you to review a list of accounts that meet your user-specified criteria before any blocking or unfollowing occurs. At that point you may add additional accounts to the whitelist before any actions are performed"