Duplicate title/content errors for blog archives

[iragless]

Hi All

Would love some help, fairly new at SEO and using SEOMoz, I've looked through the forums and have just managed to confuse myself.

I have a customer with a lot of duplicate page title/content errors in SEOMoz.  It's an umbraco CMS and a lot of the errors appear to be blog archives and pagination.  i.e.

http://example.com/blog

http://example.com/blog/

http://example.com/blog/?page=1

http://example.com/blog/?page=2

and then also

http://example.com/blog/2011/08

http://example.com/blog/2011/08?page=1

http://example.com/blog/2011/08?page=2

http://example.com/blog/2011/08?page=3 (empty page)

http://example.com/blog/2011/08?page=4 (empty page)

This continues for different years and months and blog entries and creates hundreds of errors.

What's the best way to handle this for the SEOMoz report and the search engines.  Should I rel=canonical the /blog page?  I think this would probably affect the SEO of all the blog entries? Use robots.txt?  Sitemaps?  URL parameters in the search engines?

Appreciate any assistance/recommendations

Thanks in advance

Ian

[iragless]

Thanks Mike.

I think part of my problem is that being a CMS a lot of the code is automatically generated.   Therefore the code in the header of the blog archives is the same as the code in the header for a blog post.  Therefore I guess I'm stuck unless I can find some kind of SEO plug in for Umbraco.  It was set up by another web company so I'm not very familiar with it.

If anyone has experience with this situation in Umbraco I'd love some advice.

Regards

Ian

[MikeRoberts]

Most people NoIndex their blog archives to stop duplicate content errors. So tag archives, month and year archives, etc. should be set to NoIndex,Follow.

As for pagination issues, rel="next" and rel="prev" were created to show pages in a series so those might need implementation if they haven't been already.