Google, the popular Internet search engine, has excluded more than 100 Web sites from the French and German versions of its index under pressure from those nations' governments, a new study has found. The sites include many devoted to white supremacist philosophy and Nazism, with names like Jew Watch. Ben Edelman, who did the research, said "they are mostly pretty terrible pages." Mr. Edelman wrote the study with Jonathan Zittrain, a co-director of the Berkman Center for Internet and Society at Harvard Law School. They said that the issue of Internet blocking and filtering raised questions about the ability of...