I have a legit, non-spam twitter account for my site that I've been running tweetattacks and tweetadder on for the past year or two to unfollow and follow people to build followers. Today, I got suspended for "following too aggressively" but have never had any problems before and once I ticked a box agreeing to stop using any software and "follower churning", they gave me my account back. Today, I had only followed about 250 people which is a fair bit less than sometimes but had unfollowed probably around 1000 which I guess was what did it. I was just wondering what numbers would be safe to follow/unfollow each day to stay under the radar and if I get caught again, will I get permanently banned or just another warning? Also, can anyone suggest any other good methods for getting real followers who are interested in your tweets and following you with no ulterior motive (eg a follow exchange site) besides mass following/unfollowing?