Stevie Adler was super patient and explained this to me: the first number (here it is 44) is the number of Top Writers in this category (here the category is Advice) and the numbers in the parentheses after it = the number of articles published with this category as a tag at different points in time (1/13/18, 4/14/18, and 1/1/9). He listed the tags in alphabetical order. #thanks for this!