Location information of content information (whose location is unpublished
on a network) transmitted by a location unpublished information transmitting unit
is stored to a database. A web page (containing a search keyword input field) transmitted
by a search keyword input page transmitting unit is browsed by a web page browsing
unit. A keyword that is input to the search keyword input field is transmitted
to an information searching apparatus. A searching unit searches a database for
content information corresponding to the keyword. When the keyword correlates with
information transmitted by the location unpublished information transmitting unit,
the user can find content information of which the location is unpublished with
a user's terminal apparatus.