Methods and arrangements for creating and building subcategories in a user-based voice application. User posts are appended to a category in a voice application and subdivision of the category is prompted upon satisfaction of a first condition. The category is designated as a parent category, and at least one subcategory nomination are solicited from users. User input is solicited on appending at least one nominated subcategory to the parent category, and a nominated subcategory is appended to the parent category upon satisfaction of a second condition. User input is solicited to reassign a user post from the parent category to at least one subcategory.