After a week of criticism, officials of the Wikipedia Web site, which allowed anyone to write and edit articles, are banning anonymous changes and requiring contributors to register, the Guardian reported.
The furor began last week when John Seigenthaler, a journalist and former assistant to U.S. Attorney General Robert Kennedy, was angered by an entry insinuating he had been involved in political killings.
"For a brief time, he was thought to have been directly involved in the Kennedy assassinations of both John and his brother, Bobby," said the unedited biography. "Nothing was ever proven."
Seigenthaler contacted Wikipedia founder Jimmy Wales to get it removed. "At the age of 78, I thought I was beyond surprise or hurt at anything negative said about me. I was wrong," he wrote. "For four months Wikipedia depicted me as a suspected assassin."