Blogging in Iran operates under special circumstances as the Iranian government tends to discourage self-expression . Blogs in general tend to be unregulated compared to other forms of expression in Iranian society. This characteristic can account for the huge popularity of blogs especially among Iranian youths. As of October 2005 , there are estimated to be about 700,000 Iranian blogs (out of an estimated total of 100 million worldwide ), of which about 40,000-110,000 are active , mostly written in Persian language , the official language of Iran.