Google Hummingbird is a search engine algorithm update that was introduced by Google in 2013.
Social signals are the public signals a company sends out in order to communicate with its customer base.
Astroturfing is a term used in marketing or advertising that uses deceptive tactics to give the impression that public opinion supports something, when in reality, it does not.
New media marketing is the use of digital and interactive technologies to market products and services to consumers.
Google AdSense is an online advertising platform owned by Google.