How to check penguin penalty

[kavyasharma561]

Hello friends,

What is the easiest way to check if a site (that I do not own)
has been hit by google penguin penalty or not

[Kate Evans]

I would like to share here an information which I have found during the reading an article "How to identify Pand, Penguin and other Penalties?"

When Google's penguin algorithm detects that you are attempting to manipulate the rankings via unnatural link building, it penalizes your site for the keyword and/or group of keywords that you are targeting.

If you're penalized by Penguin, you'll notice that:

    A specific keyword, or group of keywords has suffered a sharp drop in rankings. (Example: Your page goes from position #2 to position #364 in the rankings.)
    The page containing the keyword might be de-indexed while the rest of the site is indexed.
    You may or may not have a message concerning unnatural linking inside your Webmaster Tools, under "Search Queries" and "Manual Actions"
    In some cases, pages on your site that are not supposed to be ranking are now showing up for the penalized terms. (ie: Your contact page now ranks instead of your homepage when you search for your main keyword.)

Hope this information will be useful for you!

[adlerdale]

Penguin penalty is to decrease the search engine ranking of a websites which is involved by using black hat seo techniques to increase the ranking of a webpage. You can check the website here that is penalized or not.
: http://pixelgroove.com/serp/sandbox_checker/