GET and POST
GET. An HTTP request method in which parameters to a query are encoded as part of the URL and made available to a CGI program via environment variables.
http://www.lispfun.org/cgi-bin/weather.lsp?day=yesterday+time=night
POST. An HTTP request method in which parameters to a query are transmitted separately and passed to the program via the standard input stream.
http://www.lispfun.org/cgi-bin/weather.lsp