ISIS sells violent apps
Isis has used a range of social media tools to spread graphic pictures of slaughter and territorial gains, facing few if any curbs from the world's biggest technological companies.
The terror group, which uses a number of Twitter accounts, has designed and put up for sale apps that allow it to post propaganda direct to users.
One of Isis's products, 'The Dawn of Glad Tidings', abbreviated to Dawn, was sold through the online Google Play store. It has been used to circulate more than 40,000 tweets in recent days.
One message was a cartoon of fighters carried in a convoy of trucks past a sign reading "Baghdad" which was tagged: "#ISIS we are coming Baghdad."