No. Facebook a free service for everyone.
No, Facebook's ad targeting is done anonymously by our system, without sharing personally identifiable information with advertisers. If advertisers select demographic targeting for their ads, the system automatically matches those ads to the appropriate audience. Advertisers only receive anonymous, aggregated reports to let them know that their ads were seen by the groups they targeted.
No. You have control over how your information is shared. Facebook do not share your personal information with people or services you don't want. Facebook do not give advertisers access to your personal information. Facebook do not and never will sell any of your information to anyone.
For further information on Facebook's advertising system, please visit the Ads Help Center here.
For further information on Facebook's advertising system, please visit the Ads Help Center here.