Method and apparatus for displaying search results while preparing a media plan

An apparatus for generating a campaign from information about available units, comprising:

• a central computer database for storing information about available units comprising a set of formats for the available units and associated ancillary information;
• a web server computer system coupled to the central computer database for searching the central computer database based upon selective criteria and for identifying corresponding formats;
• and
• a remote computer coupled to the web server computer system and adapted to allow entry of the selective criteria so as to define a demographic and to provide the selective criteria to the web server computer system via the network and for displaying the results from the search, the results constituting the identified corresponding formats and displayed according to the associated ancillary information, the associated ancillary information including a time period for which the corresponding formats are available and statistical information regarding behaviors of the demographic during the time period that cause the demographic to be exposed to the corresponding formats.