i've seen a similar article: http://www.bodyecology.com/08/02/21/...ed_to_know.php
personally, i'd go with the 'if it doesn't make you feel like crap, go ahead and eat it' policy. there are so many people making so many claims about this and that being bad one minute and good the next, that until someone really credible gives me solid evidence and explainations that don't sound too cosmic or involve selling me something, i'm just gonna use my common sense instead of driving myself insane over it.
its also worth considering that you don't generally need a whole lot (or any) acredited nutrition qualifications, critical thinking skills, or other special powers to get a job working in a health food store, for the most part.
while i'm sure some employees in some places really do know what they're talking about, and are really quite educated on things, i'm also relatively sure that some are also completely cosmic weirdos who educate themselves on the writings of complete quacks, who beleive, absorb and spout heresay from other cosmic weirdos, who might have a small invisable pink and purple piebald pony spirit-guide called patick whispering in their ear and feeding them ultimate truths and wisdom on alternate tuesdays at 3pm, or who get their education from the promo leaflets and sales pitches that rival distributors give out about their products.
i'm glad you're trying to find a more reliable source for info. patrick is notoriously fickle and contrary.