Access to Megaupload has been intermittently blocked by the Internet authorities in Saudi Arabia.

Websites such as Wikipedia Arabic, YouTube and Facebook were blocked intermittently between 2008 and February 2011.

He wiped sweat from his brow and stopped squinting quite so hard as the morning sun was intermittently blocked by the trees.

There he was, crossing from one group to another, the white beard a beacon, switching on and off as it was intermittently blocked by figures nearer the windows.

There was a dim light on inside, intermittently blocked by the silhouette of a figure passing back and forth in front of a desk lamp.

Austrian protesters have intermittently blocked roads between the countries for months.

As of 23 May 2010, access to Megaupload was intermittently blocked by the internet authorities in Saudi Arabia by their regulator Communications and Information Technology Commission.

Megavideo was also intermittently blocked in the United Arab Emirates due to pornographic content being accessible through the service.

It has been blocked intermittently in several countries including the People's Republic of China, Iran, Uzbekistan, Pakistan, Syria (unblocked in Syria), and Bangladesh on different bases.

They are useful for Non-Line-of-Sight (NLoS) network configurations where wireless signals are intermittently blocked.