Because Krautchan.net is an image hosting site - rather than a true chatroom - it would be very easy for someone then to upload that doctored image.

BBC: Was the 'gunman warning' a hoax?

Smaller social networks, image-sharing sites, free website hosting platforms and hacked websites are increasingly being used by content distributors desperate to avoid detection.

BBC: Child abuse 'big business online'

Linda Martin believed that with Ireland hosting the competitions, the traditional image of Ireland that was projected helped boost the country's tourism reputation.

BBC: Northern Ireland