Islamic republic of Iran blocked access to Blogger, google blogging system. Many Iranian bloggers have blog in bloggers. Some of them moved to bloggers during election crisis because they found out Iranian blogging systems removed their content when it didn't comply with Iranian censorship limitation. In some cases even whole blog got deleted fr the same reason.
One of my Persian blogs deleted by Iranian blogging system administrators cause they thought my posts are against the law. There are many examples.
I should mention that Blogger has been blocked couple of times, later on their reversed their decision and just censored specific blogs in Iran.