Google Adsense Rejected On The Ground Of Scraped Content. Please Advice

But my application was rejected on the ground of:Valuable inventory: Scraped content.

What do I do next? Should I start deleting all my post? Where do I start from?

Any one with idea please?

CreativeMind18:
Wanted to upgrade my Adsense account from HOSTED to NON HOSTED.
But my application was rejected on the ground of:

Valuable inventory: Scraped content.

What do I do next? Should I start deleting all my post? Where do I start from?

Any one with idea please?

It is recommended that you update your old posts, instead of deleting them, while this may not be applicable to all post type, such as news stories.