Google releases the Google Panda and Pending algorithm updates on a regular basis. Google Penguin update deals with those websites that are resorting to black hat SEO techniques. The websites that provide poor quality content will be detected as well as pulled down from their higher ranking by Google Panda updates. Both these updates together enable Google to detect and penalize the culprit websites that are engaged in offering poor quality content, stuffing of keywords, duplication of web pages and other unethical activities.
