Software programs that automatically respond to all incoming e-mail. A mailbot, or autoresponder, replies to them by sending the author a file or message.

Source: Sweeney, Susan

Meta elements are HTML elements used to provide structured metadata about a web page. Such elements must be placed as tags in the head section of an HTML document.

Source: wikipedia.org

A listing of Internet resources pertaining to a specific in a specific topic. A meta-index is a simply a collection of URLs for related Internet resources, all arranged on a Web page by their titles.

Source: Sweeney, Susan

metadata is data about data.

The Moving Picture Experts Group or MPEG is a working group of ISO/IEC charged with the development of video and audio encoding standards. Its first meeting was in May of 1988 in Ottawa, Canada. As of late 2005, MPEG has grown to include approximately 350 members per meeting from various industries, universities, and research institutions. MPEG's official designation is ISO/IEC JTC1/SC29 WG11.

Source: wikipedia.org