Twitter has pegged daily account follows to 400 accounts per day in an attempt to combat spam and bot accounts that populate its platform,
This is a considerable drop from the previous cap, which allowed up to 1,000 follows in a single day. 
A spokesperson for the social media platform said: “As a part of our commitment to building a healthy service, we remain focused on stopping spam and abuse on Twitter. We found that having a high daily follow rate contributed to follower churn, and as a result, we are reducing the daily follow rate limit from 1,000 to 400.”
Follower churn, according to Twitter’s help center, is the process of following and unfollowing accounts. The process is done to get the attention of users and try to get people to follow back to inflate one’s follower count.
The rule change is just the latest in Twitter’s effort to cut back on the abilities of spam accounts and bots
