Mines would be: society and culture, food and beverage, sexual health, sexual behavior.
Most Helpful Guy
1. G@G community
I just love this topic. I always check it out. In fact, I came to this question because your question was in that topic. I have the most number of MHOs in G@G community I love to help people about this site and give feedbacks to the staff.
It has all the random funny stuff you'll love. I don't literally check this topic out, but most of my answers belong to this topic. It is so vast.
I don't know what to add on the third place. I really really like 'Fashion and Style', it helps me a lot. I also like 'Sexual Health', this saved my life lot of times. But I think it is 'Society and Culture' which deserves the third place. It is the topic I discuss a lot here.1