I am in the final stages of working on replacement for my ten year old photo site. The new site uses Wordpress and I have taken great pains to match the URLs of the categories on my old site in order to avoid redirecting them. The old site had pages that were duplicated across multiple categories, and buried in directories up to three levels deep. In the new site all posts are at the top level and have one unique url that is referred to from whichever categories or tags the post is tagged with. 3,200 content pages on the old site are being merged into about 1,000 on the new site via 301 redirect.
Some of the more important category pages on my old site are a landing pages, with a thumbnail menu of sub-categories. In the new Wordpress site the content is organized into smaller and smaller sets of posts...for example:
/photos/europe/ = photos of europe, including a selection from Spain
/photos/europe/spain/ = photos of Spain, including all cities in Spain
/photos/europe/spain/barcelona/ = photos of Barcelona only
/photos/europe/spain/madrid/ = photos of Madrid only
My questions are...1) Can referring to the same posts in ever decreasing sets be construed as duplicate or thin content since so much content overlaps? and 2) Is it better to keep the landing page structure than just to dump a broad selection of posts at the top category level? Does anyone have and experience with both ways of handling it, and especially if you have switched from one way to the other what were the results? Thanks for any replies