A file that records transactions that have occurred on the Web server. Some of the types of data which are collected are: date/time stamp, URL served, IP address of requestor, status code of request, user agent string, previous URL of requestor, etc. Use of the extended log file format is preferable.

The identification or name used to access a computer, network or site

A type of marketing in which a company adapts itself to uncontrollable factors within the industry.

A premium obtained by mailing in a suitable response to the manufacturer or distributor, with or without money.

Advertising which supplies paperwork for the purpose of soliciting a purchase made through the mail.