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What's the purpose of the keyword difficulty report? I've typed in some of my keywords and discoverd their "highly competetive." As if I didn't already know this. 😉 The question is, what do I do about it?

I've fixed many of my errors, but they're still showing in my dashboard. When will the site be crawled again?

is it proper to "canocalize" more than one page in a site? Or should it only be on the home page? eg: http://www.sundayschoolnetwork.com">

In my SEOmoz errors there are over a dozen 404 errors listed. However, they are not showing up in Google analytics. How can I find the referring url for the ones showing up here?

My site has been archiving our newsletters since 2001. It's been helpful because our site visitors can search a database for ideas from those newsletters. (There are hundreds of pages with similar titles: archive1-Jan2000, archive2-feb2000, archive3-mar2000, etc.) But, I see they are being marked as "similar content." Even though the actual page content is not the same. Could this adversely affect SEO? And if so, how can I correct it? Would a separate folder of archived pages with a "nofollow robot" solve this issue? And would my site visitors still be able to search within the site with a nofollow robot?