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We have multiple Gallery Pages on a website and they are all being indexed as duplicate content. When you are saying that you have no content on a page how on earth it would be treated as duplicate content. Purpose of the Gallery pages is to feature images and your website is serving the purpose precisely. To expedite the indexing of images, you can always create an image sitemap. No need to block any images. This is totally unnecessary.

If I understand your question, you cannot redirect abc.com URLs from an htaccess file on ghi.com. That directive has to be placed on abc.com's htaccess file. So the abc.com htaccess would show the specific redirects to ghi, ie: redirect 301 /wines.html http://www.ghi.com/wines def.com would also have an htaccess with redirects for each landing page: redirect 301 /trade.html http://www.ghi.com/trade ghi.com would not need any redirects since thats the site you want people to land on. Unless you want all urls on abc.com to simply redirect to the root www.ghi.com, you have to write a redirect for every page you want to redirect (or use advanced code to rewrite every landing page to the new domain).

Hi Gary, Great answer from Daniel. One thing that you can do is to create a list of noindexed pages in excel, then add all pages identified by SEOmoz as duplicates and run a simple comparison in excel. This will identify any pages that do not match. You will easily see whether the new pages in the report can be ignored. There is already a feature request in the works with the SEOmoz engineering team which will enable us to "turn off" pages that can be ignored (like those that are already noindexed). In the meantime, keeping track of the pages you can ignore is probably the best option. You can keep track of progress by following updates on the Feature Request here. Hope that helps, Sha

Use the rel="canonical" tag on these pages. That way you can send all the link juice to the version that you'd rather have rank and then also keep both pages for easier usability/navigation issues.