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Hi Mike That is odd for sure. I could see this being tricky to diagnose over a Q&A so I'll suggest some more things and ultimately you might want to try to see if someone can help. These are just guesses / possibilities; Do you have any caching plugins etc? Try disabling those Try disabling / enabling Yoast. Your settings should remain. Try one by one disabling other plugins and seeing if it changes. Are you using a theme that could conflicting? Check your theme settings. You may want to try Yoast support directly - he typically will claim it's not his plugin causing an issue (and 99% of the time it isn't) - so might be tough to get help, but that would be the ultimate source I think of a solution. Beyond getting hands on with it, that's what I could offer as some other guesses. It does sound like something possibly simple. I would keep exploring all options! If you do find the cause feel free to write back and let us know.

Mike, I specialize in on-site audits and related consulting - sent you a private message through the Moz member system just now about it... Alan

Nakul, we are going with the platform for SEO key rich urls, for example: iphone/app/books, ipad/applications/books, android/apps/books/ and this would go for the 30+ additional categories for each device, which is primarily the same as the original App Stores categorization. We are using WordPress, Yoast plugin for SEO, but have just now begun to focus on a correct taxonomy that makes sense to users as well as Google, showing a theme across our content. I would love to use the urls: iphone/apps/books, ipad/apps/books, and android/apps/books/ but I am not sure how to do this technically in WordPress, since you can only have 1 original url for any category, tag, post or page. Also, do you have any suggestions for tools to query what our visitors are searching for on our site? thank you Mike

thank you, time to clean house in a meticulous manner

Okay, again, think with the mindset there is no stupid question when reading this next one When you say "reviews and videos" would live in their own categories....do you mean, subordinate to apps  or, equal to apps with the name "app-reviews" "app-videos" If you have not figured out by now, categories are really confusing to me! thank you Mike