Nutritional Yeast Question

I recently had a comment on this blog concerning nutritional yeast.  The poster had heard that nutritional yeast could act like MSG.  MSG is just plain something that we all should avoid.  Maybe at some point I'll post some research on MSG so you can see what I mean.  I found varying points of view on the issue of nutritional yeast and a blog that had some information that summed it all up and had many comments that could help someone make the decision on nutritional yeast for themselves.