So I came across:

http://www.nation.co.ke/Features/saturday/Why+you+should+say+no+to+MSG+/-/1216/1519904/-/item/0/-/1498ab3z/-/index.html

which, 5 minutes of wikipedia and google reduces to a pile of ash. Here's a good counter article

http://www.guardian.co.uk/lifeandstyle/2005/jul/10/foodanddrink.features3