In February 2018, Twitter announced new guidelines to prevent people from misusing multiple Twitter accounts to artificially amplify a message. Twitter have provided detailed definitions of what constitutes spam in the Twitter Rules and Automation Rules, but have advised third party apps and all users to keep two specific policies front of mind:
Posting duplicative or substantially similar content, replies, or mentions over multiple accounts you control, or creating duplicate or substantially similar accounts, with or without the use of automation, is never allowed.
Posting multiple updates (on a single account or across multiple accounts you control) to a trending or popular topic (for instance, through the use of a specific hashtag) with an intent to subvert or manipulate the topic, or to artificially inflate the prominence of a hashtag or topic, is never allowed.
This means that third party services, like Buffer, are not permitted to enable users to share the same post to Twitter, either on multiple Twitter accounts, or multiple times on one account.
For this reason, we made some changes to Buffer in March 2018, which mean it's no longer possible to duplicate content, either across one, or multiple, Twitter accounts. You are still able to schedule content to multiple Twitter accounts using one Buffer account, just not the same message.
Although these kinds of changes can be a little disruptive at first, we think this is great news for the Twitter ecosystem, and we believe that our new composer experience is a small step towards helping marketers create authentic content.