Massive Ranking Fluctuations Reported, Is Penguin Update ?

[Brainpulsetech]

Last week, possibly on Friday, SEOs started voicing that Google is testing various ranking changes. That fueled the rumors of possible update. However, Google didn't respond in the favor, thus, we couldn't confirm the news that Penguin was officially released. Please find more details here : http://www.brainpulse.com/articles/seo-sem/is-google-penguin-update-on-the-way.php