100,000 tweets A DAY from ISIS: How jihadist's social media terror network is the 'most significant challenge' to Europe's security

100,000 tweets A DAY from ISIS: How jihadist's social media terror network is the 'most significant challenge' to Europe's security | Daily Mail Online: "Jihadis are sending up to 100,000 Twitter messages a day to plot terrorism, Europe’s police chief has warned."