Thank you. The problem with subcategories is that we are talking about new books, rather than just general recommendations. In a given week that are only so man

Thank you. The problem with subcategories is that we are talking about new books, rather than just general recommendations. In a given week that are only so many books that are released for a given category which are not obvious duds. The idea is that if you are interested in programming, you subscribe to the category. Then every week you take a look at the email and see if some titles catch your eye. There are some categories that may need to be split though, like Fiction for example.