Your post is very influenced and also provide an overall recap on all biggest algorithm update which is roll out last year. Penguin 4 was major update who hits the business. The penguin update helped me a lot to get a better result for one of my websites and also I got better traffic.

Thanks for reminding us all of these updates.

The Google Penguin 4.0 updates primarily seek to prevent various types of search engine spam, from being successfully rewarded in the form of higher-placed search engine results. Search engine spam can include activities such as keyword stuffing, link spamming, the use of invisible text on web pages, duplication of copyrighted content from high-ranking web sites and more.

The most awaited change is the data refresh that comes with every Penguin update. A Penguin update is more like a spike than an ongoing change. Eventually, thanks for sharing your worthy information with us.

With best regards,

Amar kumar