OOps sorry, i forgot i asked the question. I too think its a bit scary. But after eating 4 packets of a cheesy snack, i took a look at the ingredients to see what they contained.
After some googling, i discovered that MSG goes under a lot of different names. Hydrolyzed vegetable protein and yeast extract are just two of them.
So the much used Bovril, Marigold boullion powder and Lea and Perrins Woustershire (sp?) sauce all contain these same flavour enhancers.
So what is the alternative, if you try to avoid these kind of products in your cooking?