Reading the twitter terms of service, it appears as though you cannot have any ‘bulk’ following / unfollowing in your service. I am preparing a website for a client where they will have users optionally click a checkbox to auto-follow them on twitter. Is this a violation of the API?
As long as they are explicitly seeking user consent, this is fine. However, this should only be on the basis of a single account, not multiple accounts (that would be “bulk follow”).