My 3 twitter accounts with over a thousand followers each got suspended. I remember I was just using some tool to massively follow tweeple but all of a sudden I got suspended, then my another account, and then the other account.
As twitter becomes more powerful, so as the security and any other aspects to make twitter reliable. Massively following and unfollowing people will get you suspended because it will confuse the system, an account used by a person can’t massively follow/unfollow over 300 or 500 in just a couple of minutes.
2 tips that might help you not to get suspended on twitter.
Minimize on using following or unfollowing tools. If you still want to use tools, limit them like a normal person would do manually (maybe 40-70 tweeple a day).
Do not unfollow over 200 or as much as possible 100 in a couple of minutes, I have known some people got suspended already because of massive unfollowing. Do it manually or maybe limit your tool.