I often find the products on Google and Ecommerce websites. Then, when I login to my Fb account, they often suggest me the products I want on my Facebook homepage. I don't know how they can suggest me my favored products I want. Do anyone know about the search engines of the suggestions of Facebook? Thanks for your help
if you share your product on your pages, groups, fb wall they fetch data from there and showing through the suggestion box.
Not only facebook .. Google , Youtube like web's track you all the time. They use your search behaviors , cookies like techniques to track you.