The invention provides a method of distributing representations in a network environment having a host computer system connected over at least one network to a plurality of user computer systems and to a data provider computer system. Domains of representations are ranked in a first historical data set. A query is received from a user computer system within a website. A call number that depends on the rank of the domains of the representations in the first historical data set for the query is calculated, recorded and transmitted from the host computer system over the network to the data provider computer system together with the query. A plurality of representations for the query are received from the data provider computer system over the network at the host computer system and transmitted from the host computer system over the network to the user computer system.