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I asked my hostagtor customer service and he said I cannot add the trailing sash since it will create a infinite loop. And I added the index.php through the hostagtor control panel where it has a form which you can fill. And it automatically  writes the code. I am just confused about the trailing slash code in the article.

Look at your Google Analytics and check April 24th. This is the date Google's Penguin rolled out. If you see a drop that day, then watch these two videos: http://www.seomoz.org/blog/6-changes-every-seo-should-make-before-the-over-optimization-penalty-hits-whiteboard-friday http://www.seomoz.org/blog/whiteboard-on-googles-penguin-update If your copied site was indexed and your old site lost traffic, then your copied website would probably be out ranking your old site. If it is not, then there is something else. Look into GWT to see if there is something you can find there.

Yea That's what I think. I tried adding the traoling slash with 301 redirecet, but it didn't work. RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_URI} !(.)/$ RewriteRule ^(.)$ http://www.exercisebiology.com/$1/ [L,R=301] This was the code I used. Can you tell me what is wrong please?

I'm not entirely clear what the nature of the non-paginated pages is, but the canonical tag is probably a decent solution here. You may actually want to leave the crawl paths to those URLs open for a bit - Google won't process the canonicals unless they crawl the URLs. See my recent post on that subject: http://www.seomoz.org/blog/logic-meet-google-crawling-to-deindex Pagination is a bit tougher. You've got a few options: (1) META NOINDEX pages 2+ (tends to be pretty effective, but depends on the nature of the pages) (2) Use Rel=prev and Rel=next. This is tough to implement, but is recommended by Google. If the pagination isn't massive-scale, it works reasonably well. (3) If the pagination is controlled by URL parameters, indicate them in Google Webmaster Tools. I've had mixed luck with this, and your examples wouldn't work ("/P6" isn't going to come up as a traditional URL variable).