I agree with the article, however, on the point that chromium shouldn't be taken as a separate supplement. Get your chromium from whole food sources or organic vitamins. Just eating organic foods will automatically provide higher levels of chromium.
As with most minerals, there is a risk of toxicity from overdose when taking chromium, so don't think that more is necessarily better. In fact, this mineral should only be ingested in very tiny amounts -- micrograms. Personally, I don't keep track of my chromium intake. I just eat superfoods, whole food supplements, sea vegetables and other healthy food sources and let nature take care of the chromium.