Facebook will begin tracking people without Facebook accounts across the web as the social media giant expands its advertising empire. The company’s advertising network plans to install pieces of code known as “cookies” on internet user’s browsers, even if they do not have Facebook accounts, it has announced. Cookies monitor the websites that internet browsers visit and are used to target adverts at users. The technique is similar to those used by Google AdWords and other online ad platforms, and represent an extension of Facebook’s ambitions to become an advertising giant beyond its own social network.
— source telegraph.co.uk
If you like to respect your user’s privacy, please dont put any Facebook or Google stuffs on your web sites.