Twitter has announced in a blog post that it is revising its privacy policy and terms of service, effective May 18th, for all non-US accounts.

At that time, Twitter says services provided by its Twitter International Company based in Dublin, Ireland will handle account information under Irish privacy and data protection law, which is based on the European Union’s Data Protection Directive.

The EU currently is in the process of updating that directive. A draft of the legislation requires individuals to give specific consent before their personal data can be shared and it is considering expanding the “right to be forgotten” concept. A final vote is expected sometime this year.

American Twitter accounts will continue to receive service from Twitter, Inc. in San Francisco, California, operating under US law. Twitter says the change will be transparent to users.

The revisions apply to all Twitter services covered by the company’s Terms of Service and Privacy Policy, including Digits and Periscope.

Twitter’s notice cited the following as a reason for the change.

As more people around the world use our services, we’ve expanded our operations to improve how we support our users globally. The changes to our Terms of Service and Privacy Policy indicate this expansion and better reflect how we’re providing our services to users.

Non-US Twitter subscribers make up about 77 percent of all accounts, accounting for some 300 million users.

➤ Privacy updates: Some revisions to our policies

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