Basic Marmite Info:

• The Marmite FAQ
• All kinds of information about Marmite (Everything2.Com)
• Order your copy of the Mish-Mash Dictionary of Marmite by Maggie Hall, featuring all sorts of fascinating information including the Marmite Theory of Migratory Evolution

Marmite Miscellany:

• An explanation of why Marmite turns white when patted repeatedly with a spoon (MadSci Network)