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In web terms: the same as E-Mail.

Mainstream Media

Traditional media (TV, newspapers, radio) that reaches a wide audience - e.g., The New York Times, Newsweek, CBS, National Public Radio.


The term mashup refers to a new breed of Web application where content, data, or other services are combined from more than one source into an integrated experience.  An example is ChicagoCrime.org, which combines Google Maps with crime data from the Chicago Police Department into a freely browsable database of crimes by location.


1024 kilobytes. Commonly rounded down to one million bytes.

Memory Stick

Memory Stick is a memory format used primarily by Sony Digital Cameras.


Also called "instant messaging" or "IM". Popularized by AOL. Allows people to communicate by typing in real -time, or by leaving a message for the recipient to respond to when they become available.


Information about data.

Meta Search

The method of searching for meta data in documents.

Meta Tags

Tags inserted into documents to describe the document.


A blog on which one posts brief, frequent updates on one’s activities. A popular example is Twitter.


Technorati, CommerceNet, and others that are intended to give meaning to content on the Internet. They are built on XHTML, where possible reusing existing semantic elements, and adding new meaning via a system of “class”, “rel”, or “rev” attributes. For example, the “rel” attribute in hyperlinks can store additional information about the nature of the links. The first microformat, XHTML Friends Network (XFN), uses the “rel” attribute to allow web authors to identify their relationship to people they link from their websites. The “class” attribute, being multivalued, can be used to indicate the semantic content of a contained element without necessarily affecting presentation.


A web site developed with a particular focus for a specific target audience.


Musical Instrument Digital Interface
A MIDI file doesn't contain actual audio data, but rather contains commands that let MIDI-capable synthesizers re-create a specific musical passage.


Multipurpose Internet Mail Extensions
An Internet standard for defining document types. MIME type examples: text/plain, text/html, image/gif, image/jpg.

MIME Types

Document types defined by MIME.


A mirror is a direct copy of a data set. On the Internet, a mirror site is an exact copy of another Internet site. Mirror sites are most commonly used to provide multiple sources of the same information, and are of particular value as a way of providing reliable access to large downloads. Mirroring is a type of file synchronization.


Multimedia Messaging Service
A version of SMS that allows for the conveyance of media such as sounds, videos, and still images.

Mobile Technology

Devices such as cell phones and PDAs. An increasing number now offer web access, which has opened up new web application possibilities.

Mobile 2.0

This refers to the trend of websites recognizing mobile devices and utilizing their special features, such as Facebook knowing that you have signed on with your smartphone and using the GPS to tell where you are located.


Short for mobile blogging, moblogging refers to posting blog updates from a cell phone, camera phone or pda (personal digital assistant). Mobloggers may update their web sites more frequently than other bloggers, because they don't have to be at their computers in order to post.


Music on Demand
A music distribution model conceived with the growth of two-way computing, telecommunications and the Internet in the early 1990's. Primarily, high-quality music is made available to purchase, access and playback using software on the Apple Macintosh, Microsoft Windows, set-top boxes and mobile devices from an available distribution point, such as a computer host or server located at a telephone, cable TV or wireless data center facility.


Hardware equipment to connect a computer to a telephone network. Typically used to connect to the Internet via a telephone line.


Modding is a slang expression for the act of modifying a piece of hardware or software to perform a function not intended by someone with legal rights concerning that modification.

Monkey´s Audio

Monkeys Audio is a lossless codec, meaning no audio quality is lost whilst compressing.


The first commonly available web browser. Mosaic was released in 1993 and started the popularity of the web.


Movie File
A QuickTime movie file format developed by Apple. This is a common, open, cross platform standard which has been openly adopted by the Motion Picture Industry for the exchange of multimedia data.


Record stream capture videos from MovieLink™.


Record stream capture videos from movies.msn.com.


Format for compressing audio only defined in both MPEG-1 and MPEG-2.  Commonly used for digital music played on personal computers (MP3 songs) but also targeted at applications such as digital phones and new hardware MP3 players intended as discman or car CD player replacements.

MP3 File

An file containing audio compressed with MP3. Most often a music track.


An MP3-Player is a portable handheld electronic device that stores, organizes and plays audio files.


MP3pro  is an audio compression algorithm (or codec) that combines the MP3 audio format with spectral band replication compression methods. It claims to achieve transparency at lower bitrates than MP3, resulting in a file nearly half the size of standard MP3.


Moving Picture Experts Group
The Moving Picture Experts Group, a working group of the International Standards Organization (ISO) and the International Engineering Consortium (IEC) develops an international standard for compressing, decompressing, processing, and coded presentation of moving pictures, and audio.


MPEG4 is the most recent version of a standard for the digital representation of video, audio and certain types of 3D information. It processes detailed 3D representation for faces, human bodies and general 3D scenes


Microsoft Disk Operating System
A general disk based computer operating system (See OS). Originally developed by Microsoft for IBM computers, then developed by Microsoft as a basis for the first versions of Windows.


In web terms: A presentation combining text with pictures, video, or sound.


The most popular social networking site, and the most popular site on the Internet.

MySpace™ Music

Record stream capture music from MySpace™ Music.


Free open source database software often used on the web.


Files in .M4A format are actually the audio layer of (non-video) MPEG 4 movies. M4A is slated to become the new standard for audio file compression. This format is also known as Apple Lossless, Apple Lossless Encoder, or ALE. It is a new codec designed to provide lossless encoding in less storage space.


Files in .M4B are 100 percent identical to .M4A, but just with different name. So, .m4b is, like .m4a, an audio file wrapped within MPEG-4 container format. The audio encoding can be virtually anything, but most commonly used encoding for both, .m4a and .m4b, files is the AAC.
The only reason for the duplicate naming convention is so that the Apple's iTunes software and iPod players can recognize the file as an audio book rather than a normal audio track and thus allow "bookmarking" the file.