It would be awesome if products could be classified in more than two categories. I have en e-book version of one of my books. I have both the product category "E-books" and the product category "books". I would like for the e-book version also to be displayed under books. Otherwise people searching my catalogue, who "just" look under books, might end up missing, that there is an e-book version available. Original (See comments): https://help.simplero.com/forum/posts/79536-putting-a-product-in-multiple-categories
