There are websites that claim to analyze and rank the best of vitamins, probiotics, multi-vitamins, etc. The website is made to look educational, but usually has an arterial motive.
While the information presented sounds logical and complete, and may have some positive merits, the ranked products presented as best of have links to click on which brings up websites that sell these products. The Best of Vitamins website gets a kickback for each click, and more if the consumer orders the products. Often, only products with referrals and kickbacks get presented.
Sometimes the ranked products are pretty good, but then one or two slip in that blows any credibility the Best of website information had developed. One of the biggest faults is when the criteria offered for the best products talks about the value of whole food vitamins over synthetics, but then lists products with synthetic vitamins.