avoid duplicate content penalty

[tilmes]

After the inclusion in yahoo directory, they penalized my site <snip>Removed URL</snip>.

It was a biggerst mistake i made!
It had about 200,000 indexed pages before and now only 50 pages. I wrote them an email and they answered me,

<snip>removed email quote about violating Y's Guidelines</snip>

I guess my site is penalized because of the duplicated contents. Maybe or maybe not!

There is another site which has duplicated contents. And indexed pages from this site had dropped as well. I want to keep only <snip>Removed URL</snip> to be indexed from Yahoo. How can i do this without removing another duplicated site?

[edited by: martinibuster at 5:07 pm (utc) on Oct. 5, 2006]
[edit reason] See TOS [webmasterworld.com] [/edit]