Twitter is now withholding tweets when people complain they contain or link to copyright-infringing material, rather than deleting them.
The company's legal policy manager, Jeremy Kessel, said in a tweet on Saturday that the shift offers Twitter users "more transparency" in the way the service processes copyright reports. This is because other users can now see what was removed and why, rather than just not being able to see the message.
The copyright notices that Twitter receives can be seen on the Chilling Effects website, where the firm posts all such messages with personal details excised.
Some call for messages to be axed because they contain a copyrighted image, while others note that certain tweets contain links to unlawful copies of games and other media on the web.
Other types of censorship can also be seen on Twitter's Chilling Effects page, notably instances where certain messages had to be withheld in certain countries due to local laws regarding privacy or political freedom.