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We have an older website started in 2000.  We have thousands of backlinks which we believe are hurting us. Starting with Panda our site has been devastated, traffic wise, from a million + page views a month to 1/3 of that now.  We've never solicited links, never paid for them, they just happened.  It seems every "search engine" and spammy site on the web has links to us.  Hundreds if not thousands from sites like , 29searchengines.com, 55 searchengines.net, and on and on.. 1.  How does a site know when the links are harmful?
2.  How do you know which links should be disavowed? Thank you

Our developer has added a 2nd canonoical link for the "print" version of our page.   I read on another post that this appears to be not be the correct way to do this.  Is there a better way ?  Here is an example of the code:

Due to a site structural problem with our CMS we have alot of duplicate content pages (1 page, with multiple urls).  We are in the process of setting up 301 redirects to correct the problem.  Meanwhile; one of the pages with the "incorrect" URL happens to be the page google favors and also has about 100 FB "likes". The question is:  Are we better off keeping the "incorrect" URL for that particular page and redirect the other url to it? Both have a page rank of 3. Thanks

We committed an SEO sin and created a site with links back to our primary website. Although it does not matter, the site was not created for that purpose, it is actually "directory" with categorized links to thousands of culinary sites, and ours are some of the links. This occurred back in May 2010.  Starting April 2011 we started seeing a large drop in page views.  It dropped again in October 2011.  At this point our traffic is down over 40% Although we don't know for sure if this has anything to do with it, we know it is best to remove the links. The question is, given its a bad practice what is the best fix?  Should we redirect the 2nd domain to the main or just take it down?  The 2nd domain does not have much page rank and I really don't think many if any back-links to it. Will it hurt us more to lose the 1600 or so back links? I would think keeping the links is a bad idea. Thanks for your advice!