Q&A category for everyone to to gain some knowledge and share your knowledge to others.
Why should people use this category? What is it for?
This category is for asking your question and help others to answers them.
How exactly is this different than the other categories we already have?
Its a question and answers discussion category to resolve other person queries.
What should topics in this category generally contain?
This category contain generic/common questions and answers.
Do we need this category? Can we merge with another category, or subcategory?
Yes we need this category for Q&A purpose. no we are not able merge this category with another because this is only question and answers category.