My site has much more content than it once did and I would like to organize it a little better for the visitors and UX. Let's say my site has mainly shoe reviews on it. How would you go about organizing the articles using categories and tags? Right now I don't use tags at all. I've got categories like: "nike shoes" "reebok shoes" "tips on running" "Under Armour shoes" But I'm starting to feel like perhaps I'd be better off like this: CATS: "running shoes" "cross training shoes" "hiking shoes" TAGS: "blue shoes" "red shoes" "leather shoes" And what, if any, are the possible SEO damages I may cause by shifting things around a bit? Suggestions? Thanks! Suggestions?