Tokyo stocks tumbled more than 5 percent on Thursday as nervous investors dumped a broad range of issues following a Wall Street-triggered yen rise.
Drastic moves to crack down on the misconduct of listed companies were applauded by investors in cyberspace as a crucial step to clean the market environment.
The U.S. Securities and Exchange Commission (SEC) said on Tuesday that companies can use social media outlets such as Facebook and Twitter to announce key information as long as investors have been altered about which social media will be used to disseminate such information.
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