Penguin, Hummingbird, Panda
So some of you may have heard about Google Penguin, Hummingbird or Panda and wondered what the fuss was about. Google updates its search algorithm hundreds of times a year, and these animal names have been given to the more prominent updates. These updates are used to boost search results, get rid of spam and dodgy websites, and to improve the overall search experience. Now these are all good things, but there have been a number of sites that aren’t dodgy that have been negatively effected by these updates. So you need to be careful and respect the rules and guidelines, otherwise you may find that you have been penalised.