There was a time when I used to face this problem on regular basis as I had lots of clients all from the eCommerce sites.

This usually happens when your internal linking strategy is not satisfactory. The idea is to reconsider your internal linking strategy and fix the problems and you will see categories will started rank for their key phrases.

Hope this helps!

If you are adding Canonical tag to the main website, it will tell Google that the content available on domain.com is the original content but if the links are going to point on domain.com/home then link juice will not transfer to the main Domain.

If I would be at your place I would have tried using 301 redirection from domain.com/home to domain.com as this way all of my content will be appearing on the main domain and if my links are pointing to domain.com/home the juice will automatically transfer to the home page as the redirection is 301.

Chris, I have a normal practice not to start with off-page optimization when on-page is not really fixed and this is because if the on-page is not fixed you cannot taste the real power of links...

This is common that the header tags are set with CSS as many websites do this from time to time...i think what you should do is to communicate the issue with the client and tell them how important it is to fix this problem as soon as possible.

I am not sure how you are finding in unreliable... as far as the information and results are concern I find it very accurate but yes sometimes it goes down due to over usage of the pro users but i guess in that case you should contact to SEOmoz customer service team.

Anyways.. Here are some other keyword difficulty tools available on the internet.

http://www.webseoanalytics.com/free/seo-tools/keyword-difficulty.php

http://www.seologs.com/keyword-difficulty.html

hope this helps!

If the artist bio is not the major content on the page and there is other content available which is unique so there are less chances that Google will take this in to play but you never know Google... so it’s better to play safe.

Now if you want to play safe you have two choices, either to have a dedicated page for each artist and on that painting’s page just put the clickable image of the article that will take people to the artist’s bio page (not really helpful from conversion point of view)

The other idea is to use the iframe to show the content on each page and this way Google will count that a different page.