Mailing list
A discussion group, generally about a specific topic, where readers post and read messages via email.
Mambo
An open source content management system. The website for Mambo can be found here: http://www.mamboserver.com/
marquee
An HTML tag, which is not part of the HTML specification, that creates scrolling text.
MD5
A hashing algorithm that is used to convert a message into a unique string of digits.
Media streaming
A method of transmitting media, such as audio and video clips, across the internet without requiring the entire file to download before the file can be played. The file is played as it arrives on the user's computer.
Megabyte
A unit of computer storage equal to 1024 kilobytes or 1,048,576 bytes.
Merchant account
A service provided by a financial institution that allows a website to process credit card orders.
Message board
An application for the web that allows users to post and read messages about a particular topic.
Meta tag
An HTML tag placed in the head section of an HTML document that allows the author to give information about the document. The most common uses are specifying a description and keywords for a document.
MIME
Multipurpose Internet Mail Extensions.
Mime types
Identifies the format of a file.
Mirror
An exact duplicate of a website. A mirror is commonly used to make file downloads more reliable by giving multiple locations from which users can download.
Mod rewrite
An Apache module that allows URLs to be rewritten according to rules specified in a .htaccess file. It is most commonly used to rewrite dynamic URLs to make them more search engine friendly.
Mod(ification)
A plugin for a script, such as Mambo or phpBB, that extends the functionality of that script.
Mozilla
The organization that produces the Mozilla suite of applications as well as Firefox (a browser) and Thunderbird (an email client).
MX entry or MX record
A DNS entry that specifies which mail server handles the mail for a domain.
MySQL
A free, open source database that is commonly used to run dynamic websites.
