The resources in the database are classified, and searchable and browsable in various ways, according to two widely used subject classification systems, one of which is the Dewey Decimal Classification - the same used by BUBL Link's Subject Tree. In effect, it is the core of the Gateway. All available information on UK further and higher education will always be found there All available information about Government departments will be found there. News and current affairs is one example of this. Also, a page which links to all major Search engines is pretty well obligatory for major information providers - duplication is not a serious issue here.
Librarians are a particular case in point.
BUBL evolved from a service directed specifically at librarians, and has over the years broadened its user group to library users seeking subject-specific information.