I am not sure how other Twitter clients like TweetDeck handle this, but it keeps track of the followers.. what you could also do is check for the followers once when the client is started, and let it refresh when changes occur, like when you follow a new person.
I am not sure how other Twitter clients like TweetDeck handle this, but it keeps track of the followers.. what you could also do is check for the followers once when the client is started, and let it refresh when changes occur, like when you follow a new person.