McLuhan Program in Culture and Technology: http://www.mcluhan.utoronto.ca/
MediaFinder: http://www.mediafinder.com/
Merriam-Webster Online: http://www.m-w.com/
Michigan eLibrary: http://mel.lib.mi.us/
Microsoft: http://www.microsoft.com/
Microsoft PressPass: http://www.microsoft.com/presspass/
Microsoft Reader: http://www.microsoft.com/reader/
MIDI Manufacturers Association: http://www.midi.org/
Million Book Project: http://www.archive.org/details/millionbooks
Miscellanées: http://www.miscellanees.com/