I have been using Crowdfire to follow lots of people and then, a few days later, unfollow the ones who don't follow back. Then when I go to follow more people, the app is supposed to remember all the people I've previously followed, and hide them so I don't re-follow them. (At least I think that's how it works.) But I'm thinking about switching to a different, more automated tool, like Follow Liker. But I'm afraid I'll end up re-following a bunch of users that I've already followed and unfollowed. Because the new tool won't know which users I've followed in the past, right? (Or will it?) Would this get me in trouble with Twitter for follower churn? Or are they mainly worried about the churn occurring within a short time frame, like 24 hours?