Google Penguin 2.1

Google Penguin is a code name for a Google Algorithm update that was first announced on April 24, 2012. The update is aimed at decreasing search engine rankings of websites that violate Google’s Webmaster Guidelines by using Black Hat SEO techniques. Such tactics are commonly described as link schemes.The main purpose of this update is Spamdexing.

google algorithm

Definition of Search Engine Marketting (S.E.M.)

SEM stands for Search Engine Marketing.SEM is a marketing strategy which a webmaster follow to rank a website. SEM is also known as Internet Marketing. SEM further divided in to two parts,
    http://semdeeprana.blogspot.com/2013/11/what-is-google-panda.html

  • SEO : Search engine optimization
  • PPC : Pay Per Click