I want to know what is the new SEO strategy that should be used after Google Penguin Update 2.0 . What should be done to achieve high ranking without getting spam.
Act as there is no Google I know its weird but it works.
Make sure to check if there are already discussions about that sort of thing. For example, there is an open thread here:
But there's also a lot of information on the web about this, so read up on that and then let us know if you have more specific questions.