From BuzzFeed:
How To Successfully Ruin Al-Qaeda’s Day On Twitter
J.M. Berger, an analyst and consultant on al-Qaeda and extremist groups as well as author of the book Jihad Joe: Americans Who Go to War in the Name of Islam, successfully launched an effort to troll jihadists who were using a hashtag to solicit media tips on Twitter....MOREIt goes downhill pretty quickly as the trolls come out.
One example:
More cats in online video releasesThis did not please the jihadis who resorted to frowny-face emoticons:
The geeks at Britain's The Register have much more:
Osama Bin Pwned: Al Qaeda mocked in Twitter counter-jihad