Google Panda or Penguin Update History

It has been very challenging to diagnose the cause of ranking fluctuations on website,when Google rolling out its algorithm.

I consider two factors Losing factors & Winning factors :-

First lets talk about Losing factors:-

• Intrusive advertisements on sites.
• Ugly,simple,table-framed designs.
• User-generated content that attracted "thin" contributions (EzineArticles,Hubpages,Buzzle)
• Convoluted,Wordy,Content (AllBusiness,FindArticles)

Now,Winning Factors :-

• Modern,High quality,thoughtful, and "attractive" UI & website designs.
• Richer,more authentic,non-paid content(Esty,DailyMotion,Linkedin,Facebook)
• Accessible content (LOC,Gov,HuffingtonPost)