What are your thoughts on Chromium Picolinate?

I read a book entitled "Better than steroids" by Dr. Willey. In the book he recommends taking Chromium Picolinate for aiding in glucose regulation. I started doing some research and the info seems split. I've found several websites and sources saying it helps overall for weight loss, glucose regulation, and developing muscle, but I've found even more talking about that it is useless if not dangerous (potentially toxic ?). Reduced chromium levels are supposedly a large factor in sugar cravings and I can not kick this damn craving for donuts (I realize it's a mental game just as much as anything but that's a different discussion). So what are your thoughts on Chromium supplements. Do they supplement chromium in manners other than Chromium picolinate?