Much of the work researching online communities focuses on
positive benefits. These are brought to people through sharing
their interests, knowledge, and friendship online. Groups like
the Social Computing Group and the Community Technologies Group
build tools and research methods to understand and enhance such
positive aspects of online community. The CODII project takes a
different approach by examining how people organise themselves
online to disseminate illegal images. The goal of the project is
to design tools that help hotlines and moderators identify and
remove illegal online content. This project grows from a working
relationship with the Internet Watch Foundation (IWF). The IWF
are the charity who run the UK hotline that helps identify
illegal online images in order for them to be removed, especial
images of child abuse. The IWF is one of a number of hotlines
affiliated to the international association INHOPE. Our approach
is to take an understanding of the area gleaned from working
with the IWF, and