• In October, Elon Musk, a billionaire, bought Twitter.
• Elon Musk put a stop to Twitter Blue's restart.
• Accounts that subscribe to Twitter Blue can get a verified checkmark.

Twitter informed advertisers in an email on Thursday that it would be introducing new restrictions as early as next week to allow businesses to prohibit their adverts from appearing above or below tweets containing specific keywords. 

The additional limits are a component of Twitter's campaign to reassure and regain the business of advertisers who have stopped using the network since it was purchased by billionaire Elon Musk in October. This is a response to civil rights organisations' concerns that hate speech has escalated since the acquisition and the reactivation of a number of previously suspended or banned accounts. 

Online ad sales account for around 90% of Twitter's revenue. According to reports, Musk attributed a 'substantial drop in revenue' to civil rights organisations for convincing companies to stop running Twitter adverts. 

A person with knowledge of the exchange claims that a Twitter representative recently told a group of executives in the advertising industry that the company was considering hiring more of its content moderators directly rather than using independent contractors. 

The report cited a Twitter representative who claimed that by hiring internal content moderators, the social media platform will be able to commit more resources to policing non-English language content. According to an email sent to advertisers on Thursday and obtained by Reuters, an enhanced version of Twitter's subscription service known as Twitter Blue would begin rolling out on Friday.

Accounts will be able to show a confirmed checkmark with the subscription. The email specifies that accounts for companies and governmental bodies will show gold and grey check marks, while accounts for individuals will show a blue check.