Is the following wording correct?

1. What are some of the most common reasons why people become fans of K-drama?
2. What are the key factors for the success of Korean soap operas?
3. How do K-dramas go global via Internet?
4. What effects do Korean soap operas bring?
5. What various genres are there in K-dramas?
6. What plot conventions can be found in every K-drama?