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Hi,

I want to remove more than 6,000 pages of my website because of bad keywords, I am going to drop all these pages and making them ‘404’

I want to know how can I inform google that these pages does not exists so please don’t send me traffic from those bad keywords?

Also want to know can I use disavow tool of google website to exclude these 6,000 pages of my own website?

8 Keywords are increase in the last crawl report of my campaign  but in next crawl report  my keywords ranking badly down, only two keywords show in top in 50 rank and remaining 6 keywords  are not in top 50 rank now.I want to know reason how its happened and what kind of activities done wrong by me?

I have read this blog given by you but i not clear this Updates. What does it means mentioned in the bracket of Panda Updates For example :

1. Panda Update 1, Feb. 24, 2011 (11.8% of queries; announced; English in US only)
2. Panda Update 2, April 11, 2011 (2% of queries; announced; rolled out in English internationally)

what is the meaning of this (11.8% of queries; announced; English in US only). I am confused of Panda updates.
 Please clarify this Updates of Panda.