I have a couple of review sites that back in 2013 were the bees knees but unfortunately I didn't have the time to keep on top of them. As a result the number of uniques I received has dropped from 500+ a day down to less than 100. I would like to cleanse the site and update all the reviews but I am unsure how exactly to do it. Currently the URL structure is like site.com/review/product-review Should I delete the old content and replace it with new content or should I add a directory such as site.com/review/2016/product-review Or is there a better way?