The general rule of social media engagement is that for every ten articles or updates they promote they will receive one promotion in return. Make sure you retweet your most passionate followers. Applying the rule of social media promotion to Twitter, a user can expect to recieve one retweet for every ten they retweet. The more a users retweet your tweet the more followers you will gain. Promote others if you want others to promote you and you will gain more followers. As a note, promote yourself in moderation, so you don’t annoy your followers.