What is the difference between network LAN, WAN, and MAN

What is the difference between LAN, WAN, and MAN. I know they sound a bit stupid, but these are the three different types of networks that you can have. When these connections become wireless they are renamed WLAN, WWAN, and WMAN.
LAN: (local area network) A group of computers that share a common connection and are usually in a small area or even in the same building. For example an office or home network. They are usually connected by Ethernet cables and have high speed connections. If it was a wireless setup it would be called a WLAN, which would have a lower connection speed.

MAN: (metropolitan area network) This is a larger network that connects computer users in a particular  geographic area or region. For example a large university may have a network so large that it may be classified as a MAN. The MAN network usually exist to provide connectivity to local ISPs, cable tv, or large corporations. It is far larger than a LAN and smaller than a WAN. Also large cities like London and Sydney, Australia have metropolitan area networks.
WAN: (wide area network) This is the largest network and can interconnect networks throughout the worldand is not restricted to a geographical location. The Internet is an example of a worldwide public WAN. Most WANs exist to connect LANs that are not in the same geographical area. This technology is high speed and very expensive to setup.

I hope these definitions helped as I have tried to explain LAN, WAN, and MAN in non technical terms.

Notes:

• Wireless LAN is WLAN. At the moment a wired connection is still always high speed. Even though having a Wireless LAN is less mess with no cables, it compromises on speed.
• With new networks popping up all the time like 3G, GSM, and GPRS, the actual end user gets to connect directly to a WMAN which was unheard of. Most of these networks are mobile data standards that previously or still are used on cell phones.