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Thanks Dan. I use Yoast's Wordpress SEO. It's a great plugin. I have the author archive disabled.

Thanks Miriam. In an ideal world, I agree with you, but there are many reasons why this system will work better for them, so it looks like they will be going with it. The "Joe Bloggs" name was just an example name. They will, of course, be using a believable looking name. Thanks,

Hi Cyrus, I don't see any issues with the canonical tag. I'll contact the help team. Thanks,

Ok. Thanks for the advise, Ryan.

Thanks Ricko. That's is what we're thinking. Put it up and see what happens before blocking pages or anything like that. There is an existing site there already. We're doing a redesign, using a new eCommerce platform. The site currently has a domain authority of 27, and all the category pages urls we'll be able to maintain, and they have page authority, which is good. So, it shouldn't take long for us to see what will happen with the new pages. Thanks.

I repeated this elsewhere, but I think canonical on 404 page does make sense, especially if you consider the following two statements true: There is a reason for 404s, don't 301 everything There is no reason to lose the value of someone linking to your page. If those 2 statements are true then you should create an individual error page, and then everytime you serve a 404 you should include canonical to that error page. That page should have useful content (explanation of page missing and where you could go), probably a search box, and links to the most valuable content on your site. This satisfies both points.

Thanks for you input, Derek.