According to google new "Fred" update. This update specially for content point of view. Low quality content and not user friendly content basically target in this update.

Google Fred targets crap content like manipulated articles that are made up of short content that contains SEO keyword mentions in which not useful to the users.

Yes , Google algorithm has changed & updated which is called 'Fred'.Fred basically targets low quality contents & backlinks of your website.It addresses mainly in webmaster's quality guidelines.
I hope this will help you.
Thank you.

@vijayzxc

You can always use the "Thanks" button instead of saying thanks to each of the users who answered your query. It's easier that way.

[DELETED]

Yes, this update was on March 9th. Gary Illyes of Google has confirmed this, but would not comment any further than to say the answer is in Google's webmaster guidelines. It seems that it is hitting sites with low/poor value content and heavy advertising - i.e. those who are in it just for a fast buck.

Fred is all about punishing all those sites involved in Black Hat SEO and have a close relation to Penguin playing a vital role in removing spam on web, especially in the form of external spammy links