hits websites with duplicate, poor quality, or scraped content and the ones with more advertisements & images at the top. Panda hit leaves you with no other option than seeking help of experts to get the lost rankings back. Panda focused on improving the visitor experience. The first update, Panda, was rolled out by the search giant back in 2011.
Almost a year after the Panda update, Google introduced another major update in April 2012, and named it Penguin. It mainly targets sites with bad quality links and over optimization of anchor texts. The Penguin Recovery Experts at Page Traffic runs a series of checks revolving around major link factors, which are the epicentre of the problem. Penguin is designed to weed out over-optimization. Penguin poses threat for those who violate Google's quality guidelines. This might include bogus link building and farming, content spamming and forgery, keyword stuffing, website cloaking and many more reasons.
Again in August 2013, Google announced yet another major update – Hummingbird.