Twitter, YouTube and Facebook are expected to be busy during the Brazil tournament, which an Adidas exec predicts will "undoubtedly be the most social World Cup ever and probably the most social event in history."

Turkey's top court on Thursday ruled that a ban on YouTube is unconstitutional, paving the way to lift the two-month blockade, after the government cut off access to Google Inc. GOOGL +0.02% 's video-sharing website for publishing leaked state secrets just days before critical March elections.

Prime Minister Tayyip Erdogan applied to Turkey's constitutional court on Friday to challenge the alleged violation of his and his family's rights by social media, a senior official in his office told Reuters.

The Turkish government late Thursday ordered Internet service providers to restore access to Twitter, lifting a two-week ban on the microblogging site a day after the nation's highest court ruled it illegal and an infringement on free speech.

Turkey has blocked access to YouTube just hours after the leak of a recording allegedly depicting a security meeting on Syria. Google, YouTube's parent company, had previously refused government requests to remove other videos alleging government corruption. #TurkeyBlockedYouTube began trending immediately across the country, with many sharing screenshots.

Turkish prime minister Tayyip Erdogan rallied hundreds of thousands of supporters on Sunday, dismissing accusations of intolerance by western and domestic critics. "I don't care who it is. I'm not listening," he said to cheers. 

Turkey's president on Friday ruled out any ban on Facebook and YouTube after Prime Minister Tayyip Erdogan said the sites could be shut to stop his foes anonymously posting audio recordings purportedly exposing corruption in his inner circle.

Khaled al-Shaya, a top Saudi cleric, recently called on Islamic countries to ban and legislate against Google, after the internet search giant’s apparent “disrespect of Islamic beliefs” in continuing to display an inflammatory video against Islam, news website CNN Arabic reported on Saturday. Google - the parent company of video sharing site Youtube, which hosted the controversial video entitled “The Innocence of Muslims” - had “insulted the Prophet” by not removing the video, said Shaya.