The Internet has long been essential for terrorism, but what has surprised experts is the growth of such Islamist (radical Islam) and jihadist sites.

• 长久以来，网际网路对恐怖主义已相当重要，但令专家感到惊讶的是，这类伊斯兰教徒（激进伊斯兰）与圣战份子网站的大量增加。