These are just paid links. It falls under the category "exchanging goods or services for links". The "service" is a tweet or post on facebook. You can report t

These are just paid links. It falls under the category "exchanging goods or services for links". The "service" is a tweet or post on facebook. You can report them to Google here: https://www.google.com/webmasters/tools/paidlinks https://www.google.com/webmasters/tools/paidlinks