As of 2012, an average of 27% of Internet sites was blocked at a given time and as of 2013 almost 50% of the top 500 visited websites worldwide were blocked, including YouTube, Facebook, Twitter, and Blogger. The Iranian government and Islamic Revolutionary Guard Sepah are interested to block social media such as Netflix, YouTube, Facebook, Hulu, Telegram, Snapchat, Medium, etc. Iranians also stay connected on social media despite the government restrictions. The blocked sites have a wide range of topics including health, science, sports, news, pornography and shopping.