MMS, it's a fact.

MMS messaging logo.

MMS means Multi - media Messaging Service, this is different from SMS messaging which I have posted about previously because it can allow the user to send not just text in the message but also other items such as pictures, videos and sounds.

There are a good number of formats a sender can use for MMS.
Some formats include :
Text (Colour, type of text and size can be changed.)
Images (JPEG, GIF)
Video (MPEG)
Audio (MP3, MIDI)

Generally MMS messaging is used for mobile phones but it is also possible to send MMS to email addresses from a phone. Essentially MMS is just an advancement of the SMS protocol, so is roughly simular to use and reliable.
The first MMS capible phones were introduced in 2002 and it has continued to grow to be on many phones today. Although some companies such as Sony Ericson introduced EMS to their new phones, which has some features of MMS but is just an advanced version of SMS in simple terms.